For sterilizer, centrifuge, and medical-infrastructure equipment designers and buyers

Medical Facility Equipment Materials

Wide reference image of a die-cut high-temperature silicone door gasket, a resilient vibration-isolation pad, and a low-friction UHMW slider strip staged in front of clean medical facility equipment

When a sterilizer door starts leaking steam or a centrifuge starts walking across the floor, the fix is usually a converted part, not a new machine. H-O Products cuts the door and panel gaskets, vibration and noise isolation pads, high-temperature insulation, and slider and wear surfaces that keep sterilizers, autoclaves, centrifuges, washer-disinfectors, carts, and infrastructure in service, made to your drawing from material grades commonly used in medical-facility equipment.

Built for: autoclave and sterilizer door and chamber gaskets, centrifuge and pump vibration and noise isolation, high-temperature insulation around heaters and steam lines, and low-friction slider and wear surfaces on drawers, rails, and moving assemblies.

01
4 jobs
Four facility-equipment jobs, one converter
Environmental and steam-door seals, vibration and noise isolation, high-temperature insulation, and low-friction slider and wear surfaces. Four different material logics across one equipment build.
02
6 families
Facility material families
FDA-grade and standard EPDM, medical and industrial silicone (solid, foam, sponge), microcellular polyurethane, UHMW-PE wear film, cork composite, and high-temperature insulation media, die-cut to your part.
03
4 cycles
Sterilization and steam considered
Steam autoclave, ethylene oxide, gamma, and e-beam, plus continuous high-temperature steam-line exposure. The cleaning, sterilization, and heat the equipment sees is part of the gasket and insulation spec.
04
3
Designations referenced
Material grades are referenced by designation to FDA contact basis, ASTM cellular-rubber methods, and ISO 10993 or USP Class VI where a part is patient or fluid-contact, with the maker TDS cited inline.
Made in Winsted, CT · Family-owned since 1971 · ISO 9001:2015 certified organization
Finished die-cut Medical silicone foam parts converted by H-O Products, on release liner ready to ship
How it works
  1. 1
    Send drawing
    Upload a DXF, STEP, or PDF, or describe the equipment and the seal, pad, insulation, or slider. A sample part works too.
  2. 2
    Material review
    Engineering reviews the job, the service temperature, the cleaning and sterilization cycle, the load and ingress, the friction and wear duty, and any contact basis against the maker TDS, the ASTM methods, and the geometry.
  3. 3
    Prototype
    Samples typically ship in 3–5 business days for common configurations on materials we keep on hand. Made-to-order; minimum run quantities apply and vary by material and part.
  4. 4
    Production
    Standard production runs ship about 2 weeks after drawing approval, including kiss-cut-on-liner and laminated configurations. Ongoing parts run with material traceability and lot-code documentation aligned to your requirements.
Quick Answer

For medical facility equipment, choose the converted part from the job. For a sterilizer or autoclave door, chamber, or panel seal, specify a medical silicone foam or FDA-grade EPDM that tolerates steam and cleaning chemistry. For vibration and noise isolation on a centrifuge or pump, specify a resilient neoprene foam or a microcellular polyurethane (PORON Industrial) pad. The remaining zones and duties are mapped in the When-to-spec list on this page. Values are per the TDS on file; see the material reference below for ordering details.

Standards & Designations

ASTM D1056 (cellular rubber) · ASTM D2240 (durometer, Shore A) · FDA 21 CFR 177.2600 (rubber articles for repeated contact, a composition basis) · ISO 10993-1 (biological evaluation, where a part is patient-contact, by designation) · USP Class VI / USP <88> (in-vivo plastics reactivity, by designation) · IEC 60529 (IP ingress) · ISO 9001:2015 (H-O converting QMS, not a device clearance).

The material maker evaluates a grade; H-O is an ISO 9001:2015 certified converter and does not certify finished devices or facility equipment.

When To Spec What
Where it lives

Application Zones

Four distinct material jobs run across a piece of medical facility equipment: the door, chamber, and panel seal that holds against steam, moisture, and cleaning chemistry; the vibration and noise isolation that quiets a centrifuge, pump, or moving assembly; the high-temperature insulation around a heater, steam line, or hot chamber; and the low-friction slider and wear surface on a drawer, rail, or moving part.

Each is a different material logic, and a single piece of equipment usually needs several. H-O converts the materials for each. Click a tab to see the part, the temperature and cleaning considerations, and the families H-O converts for that zone.

Close-up of a silicone door gasket seated in the door channel of a stainless-steel sterilizer or autoclave

Sterilizer, autoclave, and washer door and chamber seals

Designations: FDA contact basis, ASTM D1056, ASTM D2240Cycle: steam, EtO, cleaning chemistry

The door, chamber, and panel seal holds the equipment closed against steam, moisture, and the cleaning and sterilization chemistry it sees every cycle. The controlling properties are sealing under the available closure force, recovery after thousands of open-and-close cycles, and resistance to repeated steam and cleaning agents.

A medical or high-temperature silicone (foam, sponge, or solid) leads for steam autoclaves because it tolerates steam and the heat; a closed-cell silicone sponge (BISCO® 7000 series or kSil™ V-0) gives a moisture-resistant seal at modest force; and an FDA-grade or standard EPDM handles a wiped-down or lower-temperature panel at a lower material cost.

Match the gauge and durometer to the channel and the closure force, and state the cleaning and sterilization cycle so the grade matches the life. Durometer is reported per ASTM D2240 and cellular-rubber properties per ASTM D1056; grade-specific values are per the maker TDS.

Medical silicone foamSoft, heat-tolerant cellular silicone for door and chamber seals that see steam and modest closure force. Tolerates the high-temperature steam cycle; grades referenced to the relevant designations by the maker. [7]
Closed-cell silicone sponge (BISCO® 7000 series / kSil™ V-0)Moisture-resistant closed-cell silicone sponge for door and access seals that see repeated cleaning; sterilization and chemical compatibility are grade-specific — verify on the maker TDS. [4]
FDA-grade EPDM solidLower-cost environmental seal for a wiped-down or lower-temperature panel. FDA describes the composition / contact basis (e.g. 21 CFR 177.2600), not a device clearance. [6]
EPDM foamSoft EPDM cellular seal for cart, cabinet, and access-panel doors where weather and ozone resistance and a lower cost lead. Die-cut to the channel and gauge.
Macro photo of a resilient foam vibration-isolation pad and a microcellular polyurethane mount staged beside a stainless equipment foot

Vibration, noise, and shock isolation

Properties: resilience, load deflection, dampingTest methods: ASTM D1056, ASTM D2240

Centrifuges, pumps, compressors, and moving assemblies generate vibration and noise that a resilient pad, mount, or bumper isolates so the equipment runs smoother and quieter and adjacent components see less fatigue. The controlling properties are the load the pad carries, the deflection at that load (which sets how much it isolates), resilience, and the environment.

A resilient closed-cell neoprene foam is a durable, cost-effective isolation pad; a microcellular polyurethane such as PORON Industrial gives controlled deflection and low compression set for a precise mount; and a cork or cork composite gives a stiff, anti-skid compression pad under a foot or base.

Match the durometer, gauge, and footprint to the load and the isolation you need. Cellular-rubber properties are reported per ASTM D1056 and durometer per ASTM D2240; grade-specific values are per the maker TDS.

Neoprene foamResilient closed-cell neoprene cellular foam for durable, cost-effective vibration and noise isolation pads and bumpers. Die-cut to the footprint and gauge for the load. [7]
PORON Industrial microcellular PUControlled load deflection and low compression set for a precise isolation mount that holds its set over many cycles. Microcellular polyurethane, to the mount geometry.
Cork / cork compositeStiff, anti-skid compression pad under a foot, base, or instrument where a high-friction, low-creep isolation pad is wanted. Die-cut to the base footprint. [7]
Rebonded neoprene foamDense rebonded foam for a firm, energy-absorbing isolation or shock pad under heavy equipment. Die-cut to the footprint; firmness sized to the load.
High-temperature silicone and glass-fiber insulation and sealing materials for medical facility equipment

High-temperature insulation and sealing

Properties: continuous service temperature, heat resistanceMaterial: high-temp silicone, glass-fiber media

Around heaters, steam generators, sterilizer chambers, and hot lines, the seal, cushion, or insulation has to hold its properties at continuous high temperature where a standard elastomer would harden or degrade. The controlling property is the continuous service temperature the part sees and how long it sees it.

A high-temperature silicone sponge or solid silicone holds its sealing and cushioning properties at elevated temperature and is the usual choice for a hot seal or gasket; a glass-fiber insulation paper or high-temperature insulation media handles a thermal-barrier or insulation job around a hot surface.

State the continuous and peak temperature and whether the part also sees steam or chemical exposure, so the right high-temperature grade or insulation media is chosen. Service temperature is a maker-TDS property; this page frames it qualitatively and defers grade-specific limits to the TDS on file.

High-temperature silicone sponge (BISCO)Cellular silicone that holds sealing and cushioning properties at continuous high temperature, for a hot door, chamber, or line seal. Grades and temperature limits per the maker TDS.
Solid silicone rubber (high-temp grade)Non-porous solid silicone for a high-temperature gasket or seal where a sealing surface and heat tolerance are both wanted. Die-cut to the flange or channel; service temperature per the maker TDS.
Glass-fiber insulation paperHigh-temperature glass-fiber insulation media for a thermal-barrier or insulation layer around a heater, steam line, or hot chamber. Die-cut to the insulation pattern; temperature rating per the maker TDS.
Flame-retardant silicone spongeA flame-retardant cellular silicone where a hot seal also needs a flammability rating. Grades referenced to the relevant designations by the maker; to the part.
UHMW-PE slider and wear surface film staged with durable foam bumper stock

Sliders, wear surfaces, and bumpers

Properties: low friction, abrasion resistance, quiet glideMaterial: UHMW-PE wear film, durable foams

Drawers, rails, trays, and moving assemblies need a low-friction wear surface that glides quietly and resists abrasion over many cycles. The controlling properties are a low coefficient of friction, abrasion resistance, and quiet operation. An ultra-high-molecular-weight polyethylene (UHMW-PE) engineering film is the standard low-friction, abrasion-resistant slider surface, and adhesive-backed to the moving face; a durable closed-cell foam or a rebonded foam gives a bumper or end-stop that quiets the travel.

State the mating surface, the load on the slider, and whether the part is adhesive-backed, so the right wear film and construction are chosen. UHMW properties are a maker-TDS property; H-O die-cuts and laminates the wear surface to the drawing.

UHMW-PE engineering filmLow-friction, abrasion-resistant ultra-high-molecular-weight polyethylene film for slider and wear surfaces on drawers, rails, and moving assemblies. Die-cut and adhesive-backed to the moving face. [10]
Neoprene foam bumperResilient closed-cell neoprene foam for a quiet bumper or end-stop on a drawer or moving assembly. Die-cut to the bumper geometry; adhesive-backed if specified.
Rebonded neoprene foamDense rebonded foam for a firm end-stop or wear pad that absorbs travel energy. Die-cut to the footprint; firmness sized to the impact.
Foam materials (family)The broader foam family for orientation across bumper, wear, and end-stop pads. H-O converts the durable foam your drawing calls for.
Spec discipline

Six decisions that drive your facility-equipment material spec

Specifying a facility-equipment material is not a single-property choice. The right converted part satisfies several independent constraints at once, and missing one produces a door gasket that hardens after a few steam cycles, an isolation pad that bottoms out under load, an insulation that degrades at temperature, or a slider that drags. Read the six factors before reaching for a material.

Specification principle

Match the part to the job, the temperature, and the cleaning cycle, not to the catalog. A standard foam will harden in a steam autoclave, and a low-temperature elastomer will degrade against a hot line. Decide the job first (seal, isolation, insulation, or slider), then the service temperature and the cleaning and sterilization method, then the load and geometry. H-O references material grades by designation; the maker evaluates the grade.

4 jobs
Four jobs, four material logics

Seal, isolate, insulate, and slide are different problems. A door seal wants steam and cleaning tolerance; an isolation pad wants resilience and controlled deflection at load; an insulation wants continuous high-temperature stability; a slider wants low friction and abrasion resistance. One piece of equipment usually needs several, and the right material differs for each. Specifying one material across all four jobs is the common facility-equipment mistake.

Medical / high-temp silicone FormFoam / sponge / solid DurometerASTM D2240 Service tempper TDS on file Sterilizesteam / EtO / gamma

Read the six factors below in order. The job narrows the material family; the service temperature and the cleaning cycle narrow the grade; the load, ingress, friction, and contact basis finish the spec. Selecting one factor at a time and re-checking the others is the discipline.

Show all 6 selection factors tap to expand
1

The job decides the material family before anything else

The first decision is which of the four jobs the part does. A seal closes a door, chamber, or panel against steam, moisture, and cleaning chemistry, so it wants a sterilization-tolerant elastomer. A vibration or noise isolation pad carries a load and deflects to isolate, so it wants a resilient or microcellular foam with controlled deflection. Insulation sits at continuous high temperature, so it wants a high-temperature silicone or an insulation media.

A slider needs low friction and abrasion resistance, so it wants a UHMW-PE wear film. Decide this first, because it picks the family, and a material that is right for one job is usually wrong for another. State the job on the drawing.

One piece of equipment usually needs parts from several jobs; H-O converts each from the right family rather than forcing one material across all of them.
2

Service temperature narrows the grade hard

Facility equipment runs hot in places: steam autoclaves, heaters, steam lines, and sterilizer chambers expose seals and insulation to continuous elevated temperature where a standard elastomer hardens or degrades. Define the continuous service temperature and the peak the part sees. Silicone (foam, sponge, and solid) holds its properties at high temperature and is the usual choice for a hot seal; a glass-fiber insulation media handles a thermal-barrier job; a standard EPDM or neoprene suits a cooler, wiped-down part.

State the continuous and peak temperature, because it is the single factor that most often disqualifies a material. Service temperature is a maker-TDS property; this page frames it qualitatively and defers grade-specific limits to the TDS on file.

Continuous service temperature is a maker-TDS property by grade; silicone leads at high temperature, and the page references the TDS rather than quoting a number that varies by grade and form.
3

Cleaning and sterilization cycle narrows the elastomer

The cleaning and sterilization method the equipment sees is part of the seal spec. Silicone tolerates steam autoclave, ethylene oxide, gamma, and e-beam well, which is why it leads for sterilizer and autoclave seals; EPDM handles steam and many cleaning chemistries but is less suited to some solvents and to the highest steam-cycle temperatures. The number of cycles matters as much as the method: a door gasket that survives one autoclave can take a compression set over thousands.

State the method and the cycle count, and choose a grade and a closed-cell or sponge construction that recovers over that life. A wiped-down panel can use a wider material set than a door autoclaved daily.

Sterilization tolerance is a maker-TDS property by method and dose; this page frames it qualitatively and defers grade-specific limits to the TDS on file.
4

Load, deflection, and ingress set the isolation and seal

For an isolation pad, the load it carries and the deflection at that load set how much it isolates: too soft and it bottoms out, too firm and it transmits vibration. For a seal, the closure force and the ingress target set the durometer and gauge. Define the load on an isolation pad or the closure force and the ingress (IP) target on a seal, described per IEC 60529 where ingress applies.

Match the durometer, gauge, and footprint to the load or the closure force, so an isolation pad deflects the right amount and a seal compresses correctly. A resilient or microcellular foam is sized to the isolation load; a closed-cell or solid elastomer is sized to the seal. Over-firm or under-sized parts are common causes of poor isolation and seal leaks.

Load deflection and cellular properties are reported per ASTM D1056; ingress, where it applies, follows IEC 60529. Grade-specific values are per the maker TDS.
5

Friction and wear set the slider material

For a moving or sliding interface, the controlling properties are a low coefficient of friction, abrasion resistance, and quiet operation over many cycles. An ultra-high-molecular-weight polyethylene (UHMW-PE) engineering film is the standard low-friction, abrasion-resistant slider surface; a durable closed-cell or rebonded foam gives a quiet bumper or end-stop. State the mating surface, the load on the slider, the number of cycles, and whether the part is adhesive-backed, so the right wear film and construction are chosen.

H-O the UHMW film and laminates it to the moving face, and the bumper to the travel stop. Choosing a high-friction material for a slider, or a soft foam where a wear surface is needed, are common drag and wear-out causes.

UHMW-PE friction and wear properties are maker-TDS properties; H-O die-cuts and laminates the wear surface and bumper to the drawing.
6

Contact basis matters only where the part touches a patient or fluid

Most facility-equipment parts are infrastructure, not patient-contact, so the biological-evaluation designations do not apply to them. But where a part does touch a patient, a fluid path, or a sterile field, define the contact and the duration, because that sets which designations the grade is referenced to. A patient- or fluid-contact part references ISO 10993 endpoints or a USP Class VI designation; a food- or fluid-contact part references an FDA contact basis (e.g.

21 CFR 177.2600). State whether the part is patient- or fluid-contact, so H-O references the right grade. The material maker evaluates the grade; the device or equipment maker owns the finished-equipment file. For a pure infrastructure seal or slider, an industrial grade and the ASTM methods are the right reference, not a medical designation it does not need.

ISO 10993 and USP Class VI apply at the material level only where a part is patient- or fluid-contact; infrastructure parts reference an FDA contact basis and the ASTM methods. H-O makes no device or equipment clearance claim.
Decision support
Facility Equipment·Interactive Selection

Specification Tools

Two tools to take you from "I have a seal, isolation, insulation, or slider job" to here is the family to put on the drawing: a facility-equipment material picker that maps your job, temperature, and cleaning cycle to a material family, and a side-by-side comparison matrix of every facility material on this page.

1. Facility-equipment material picker by job, temperature, and cycle

Pick the equipment job, the service temperature, and the cleaning or sterilization cycle. The picker maps them to a recommended family with a reason. Conservative starting point; confirm the grade, gauge, and temperature limit against the maker TDS for your parts.

Pick a job, temperature, and cycle to see a recommendation

The result returns a recommended facility-equipment family, the reason it fits your job and duty cycle, and a one-click path to the product category and the quote form. Grades are referenced by designation; confirm the temperature limit and any contact basis on the maker TDS.

2. Side-by-side: facility-equipment comparison matrix

Every facility-equipment family called out on this page, with material type, the job it fits, temperature note, and the contact-designation note. Click a column header to sort. Click any material name to jump to its accordion entry and reference.

Filter
Material Material type Job Temperature Form factor Best for
Sealing families (silicone, EPDM)
Medical silicone foamSoft, heat-tolerant cellular Silicone foam Steam-door seal High temp Sterilizer / autoclave door seal
Closed-cell silicone sponge (BISCO® 7000 series / kSil™ V-0)Moisture-resistant closed-cell Closed-cell silicone Chamber seal High temp Moisture-resistant sterilized seal
FDA-grade EPDM solidLower-cost wipe-down seal Solid EPDM Panel seal Ambient / warm Lower-cost wipe-down panel seal
EPDM foamSoft, weather-resistant EPDM foam Cabinet seal Ambient / warm Cart / cabinet / access-panel seal
Vibration / noise isolation
Neoprene foamResilient closed-cell Neoprene foam Isolation pad Ambient / warm Durable vibration / noise pad
PORON Industrial microcellular PUControlled deflection, low set Microcellular PU Precise mount Ambient / warm Precise low-set isolation mount
Cork / cork compositeStiff, anti-skid Cork composite Anti-skid pad Ambient / warm Anti-skid compression pad under a foot
High-temperature insulation and wear surfaces
High-temperature silicone spongeHolds properties hot Silicone sponge Hot seal Continuous high temp Hot door / chamber / line seal
UHMW-PE engineering filmLow friction, abrasion-resistant UHMW-PE film Slider / wear Ambient / warm Low-friction slider / wear surface
Material type and job are from the maker designations and the H-O converting envelope; service temperature and sterilization tolerance are maker-TDS properties by grade, method, and dose. ISO 10993 and USP Class VI designations apply at the material level only where a part is patient- or fluid-contact; infrastructure parts reference an FDA contact basis and the ASTM methods. H-O is an ISO 9001:2015 certified converter and does not certify finished devices or equipment. Confirm grade-specific limits against the TDS on file.
Found your candidate family? The fastest next step is the drawing: H-O reviews it against these selections and comes back with a manufacturable option and the TDS.
Already know your spec?

Skip ahead and request your engineering review now

If your drawing already calls out a specific silicone or EPDM door gasket, a neoprene or PORON isolation pad, a high-temperature silicone or insulation media, or a UHMW slider surface, send it over for engineering review.

What goes wrong in the field

Failure modes the designer designs against

Facility-equipment material failures are predictable. Each maps back to a missed selection factor: the wrong material for the steam cycle, an isolation pad that bottoms out or transmits vibration, an insulation that degrades at temperature, a slider that drags, or a gasket the door cannot close. The fixes are at spec and in the converted construction.

Field caution

Facility-equipment parts rarely fail on day one. A door gasket that hardens over hundreds of steam cycles, an isolation pad that takes a set, an insulation that degrades after months at temperature, and a slider that wears down all show up after the equipment has been in service. The fix is at spec and in the converted construction, not at the service call.

Show all 5 failure modes tap to expand

1. The door gasket hardens and leaks after repeated steam cycles

A sterilizer or autoclave door seals on day one, then leaks after hundreds of steam cycles. The mechanism is heat and compression set: a material not rated for continuous high temperature hardens and loses its recovery, so the gasket no longer fills the channel when the door is reopened and reclosed. The usual cause is a standard elastomer used where a high-temperature silicone belongs.

The fix: choose a medical or high-temperature silicone (foam, sponge, or solid) rated for the steam cycle and the temperature, and state the method, the cycle count, and the service temperature on the drawing so the grade matches the life. A silicone that holds its properties at temperature outlasts an EPDM or neoprene in a steam-door seat. Compression and recovery are characterized per ASTM D1056; grade limits are per the TDS on file.

[7]

2. The isolation pad bottoms out or transmits vibration

A vibration-isolation pad either compresses fully under the equipment load and stops isolating, or it is too firm and passes the vibration through. The mechanism is a load and deflection mismatch: an isolation pad only isolates when it deflects the right amount at the operating load, so a pad that is too soft bottoms out and one that is too firm transmits.

The fix: match the durometer, gauge, and footprint to the load and the isolation you need, a resilient neoprene foam or a microcellular polyurethane sized to deflect correctly at the operating load. A microcellular polyurethane with low compression set holds its deflection over many cycles. State the load and the operating conditions so the pad is sized to isolate. Cellular properties and load deflection are reported per ASTM D1056.

[7]

3. The insulation or hot seal degrades at continuous temperature

A seal or insulation around a heater or steam line works at first, then hardens, cracks, or loses its insulating property after months at temperature. The mechanism is a continuous-temperature limit exceeded: a material rated for intermittent or moderate heat degrades when held at a higher continuous temperature. The fix: specify a high-temperature silicone or a glass-fiber insulation media rated for the continuous service temperature and the peak, and state both on the drawing.

Silicone holds its sealing and cushioning properties at high temperature; a glass-fiber media handles a thermal-barrier job; verify the continuous-temperature limit on the maker TDS. Service temperature is the factor that most often disqualifies a material here, so it is the first thing to state. [5]

4. The slider drags or wears down, so the drawer binds

A drawer, rail, or moving assembly glides smoothly at first, then drags, sticks, or wears a groove after many cycles. The mechanism is the wrong wear surface: a high-friction or soft material drags and abrades, so the slider wears down and the travel binds. The fix: specify a low-friction, abrasion-resistant ultra-high-molecular-weight polyethylene (UHMW-PE) engineering film, and adhesive-backed to the moving face, so the slider glides quietly and resists wear over many cycles.

State the mating surface, the load, and the cycle count so the wear film and construction match the duty. A UHMW slider outlasts a generic plastic or foam in a high-cycle wear interface. UHMW friction and wear properties are per the maker TDS. [10]

5. A medical designation was over-specified, or a contact basis was missed

A facility-equipment part is either over-specified to a medical biological designation it does not need (adding cost), or, where it does touch a patient or fluid, shipped with no documented contact basis. The mechanism is a mismatch between the part and the basis: most facility parts are infrastructure and reference an FDA contact basis and the ASTM methods, while a patient- or fluid-contact part needs an ISO 10993 or USP Class VI reference.

The fix: state whether the part is patient-contact, fluid-contact, or pure infrastructure, so H-O references the right grade, neither over-certifying a slider nor under-documenting a fluid-contact seal. The material maker evaluates the grade; the equipment maker owns the finished-equipment file. ISO 10993-1 sets the contact classification where it applies. [4]

Reference

Material reference

Detailed references for the facility-equipment families on this page: the sealing families (medical silicone foam and closed-cell silicone sponge for steam doors and chambers, FDA-grade EPDM and EPDM foam for wipe-down panels); the vibration and noise isolation families (neoprene foam, PORON Industrial microcellular polyurethane, and cork composite); and the high-temperature and wear families (high-temperature silicone sponge and UHMW-PE engineering film).

Material grades are referenced by designation, with ISO 10993 or USP Class VI applied only where a part is patient or fluid-contact; otherwise an FDA contact basis and the ASTM methods apply. Durometer is reported per ASTM D2240 and cellular-rubber properties per ASTM D1056; H-O die-cuts and converts to drawing in low and high volume. Grade-specific values are per the maker TDS on file, not headline numbers.

Medical silicone foamSoft, heat-tolerant cellular silicone · steam-door and chamber seals · high service temperature
CompositionSoft cellular silicone foam for high-temperature sealing and cushioning
DutySterilizer and autoclave door and chamber perimeter seals
Service temperatureHolds properties at high temperature per the maker TDS; the usual choice for a steam door
SterilizationSterilization compatibility is grade- and cycle-specific — verify modality and cycle on the maker TDS
Closure forceLow; conforms to the door channel and seals under a latch or clamp
PropertiesCellular properties per ASTM D1056; durometer per ASTM D2240
Form factorsDie-cut sheet and strip, kiss-cut on liner with an adhesive face if specified
Where it lives in this application: the soft, heat-tolerant seal on a sterilizer or autoclave door and chamber, where steam and high temperature would harden a standard elastomer. A medical silicone foam conforms to the door channel, seals under modest force, and holds its properties at the steam-cycle temperature. Choose it for a hot door seal; step to closed-cell silicone for a tighter moisture seal where the closure force allows.

Medical silicone foam is a soft cellular silicone commonly used for high-temperature door and chamber seals on sterilizers and autoclaves. Grades are referenced to the relevant designations by the material maker; service temperature and sterilization tolerance are maker-TDS properties. This page frames softness and temperature qualitatively. H-O converts to drawing and does not certify finished devices or equipment.

Closed-cell silicone sponge (BISCO® 7000 series / kSil™ V-0)Moisture-resistant closed-cell · chamber and access seals · verify sterilization per grade
CompositionClosed-cell silicone sponge (industrial grades), moisture-resistant, for sealing
DutyMoisture-resistant chamber, door, and access seals that see repeated cleaning
SterilizationSterilization compatibility is grade- and cycle-specific — verify modality and cycle on the maker TDS; verify gamma dose
Service temperatureHolds properties at high temperature per the maker TDS
Contact basisGrades referenced to ISO 10993 / USP Class VI by designation where the part is patient- or fluid-contact
PropertiesCellular properties per ASTM D1056; durometer per ASTM D2240
Form factorsDie-cut sheet and strip, kiss-cut on liner with an adhesive face if specified
Where it lives in this application: a moisture-resistant chamber, door, or access seal on equipment that sees repeated cleaning and sterilization and needs a tighter moisture seal than a foam. Moisture-resistant, seals under modest force, and tolerates the steam and sterilization cycle. Choose it for a tighter seal where the closure force allows; a foam is the softer, lower-force alternative.

Closed-cell silicone sponge (BISCO® 7000 series / kSil™ V-0) is a moisture-resistant closed-cell sponge commonly used for chamber and access seals on reusable medical equipment. These are industrial grades: where a part is patient- or fluid-contact, specify a grade with the documentation the application requires, evaluated by the material maker; otherwise an FDA food-contact basis and the ASTM methods apply where relevant. Sterilization and chemical compatibility are grade-specific maker-TDS properties. H-O converts to drawing and does not certify finished devices or equipment.

FDA-grade EPDM solidLower-cost wipe-down seal · weather and ozone resistant · FDA composition basis
CompositionSolid EPDM in an FDA-grade composition; FDA describes the contact basis, not a clearance
DutyLower-cost environmental seal on a wiped-down or lower-temperature panel
Service temperatureAmbient to warm; less suited to the highest steam-cycle temperatures than silicone
CleaningHandles steam and many cleaning chemistries; less suited to some solvents (verify on TDS)
Weather / ozoneEPDM resists weather and ozone; durable for cart and cabinet panels
DurometerPer TDS on file (reported per ASTM D2240, Shore A)
Form factorsDie-cut sheet and strip; gauge to fill the channel or land
Where it lives in this application: the lower-cost panel and cabinet seal where silicone is not required, the part is wiped down rather than autoclaved daily, and the temperature is moderate. An FDA-grade EPDM gives a durable environmental seal with an FDA composition basis at a lower material cost than medical silicone. Choose it for wipe-down panels; move to medical or high-temperature silicone where steam and heat are the drivers.

FDA-grade EPDM solid is commonly used for lower-cost environmental seals on wiped-down medical-equipment panels. The FDA-grade designation describes the composition and contact basis (e.g. 21 CFR 177.2600), not a device clearance. Durometer values are per the maker TDS. H-O converts to drawing and does not certify finished devices or equipment.

EPDM foamSoft EPDM cellular · cart and cabinet seals · weather and ozone resistant
CompositionSoft closed-cell EPDM cellular foam for low-force environmental sealing
DutyCart, cabinet, and access-panel door seals at modest closure force
Service temperatureAmbient to warm; weather and ozone resistant
Closure forceLow; conforms to a light door and seals under a latch or magnet
CleaningHandles wipe-down cleaning chemistries; verify solvent compatibility on TDS
PropertiesCellular properties per ASTM D1056
Form factorsDie-cut sheet and strip, kiss-cut on liner with an adhesive face if specified
Where it lives in this application: a soft, low-force seal on a cart, cabinet, or access-panel door where weather and ozone resistance and a lower cost lead and the temperature is moderate. An EPDM foam conforms to a light door and seals under a latch. Choose it for low-force cabinet seals; step to a silicone foam where steam and high temperature apply.

EPDM foam is a soft closed-cell cellular foam commonly used for low-force cart and cabinet door seals. It resists weather and ozone; service temperature and cellular properties are maker-TDS properties characterized per ASTM D1056. H-O converts to drawing and does not certify finished devices or equipment.

View all EPDM foam → Browse the materials catalog →
Neoprene foamResilient closed-cell · vibration and noise isolation · durable, cost-effective
CompositionResilient closed-cell neoprene (polychloroprene) cellular foam
DutyVibration and noise isolation pads, mounts, and bumpers
ResilienceResilient and durable; absorbs and isolates vibration over many cycles
EnvironmentResists weather, oils, and many chemistries; a robust industrial isolation foam
Load deflectionSized by durometer and gauge to deflect correctly at the operating load
PropertiesCellular properties per ASTM D1056; durometer per ASTM D2240
Form factorsDie-cut to the footprint and gauge; adhesive-backed if specified
Where it lives in this application: a durable, cost-effective vibration and noise isolation pad, mount, or bumper under a centrifuge, pump, or moving assembly. Resilient and robust, it isolates vibration and quiets the equipment. Choose it for general isolation; step to a microcellular polyurethane where precise, low-set deflection is wanted.

Neoprene foam is a resilient closed-cell cellular foam commonly used for durable vibration and noise isolation pads and bumpers. Load deflection, cellular properties, and durometer are maker-TDS properties characterized per ASTM D1056 and ASTM D2240. H-O converts to drawing and does not certify finished devices or equipment.

View all Neoprene foam → Browse the materials catalog →
PORON Industrial microcellular PUControlled deflection · low compression set · precise isolation mount
CompositionMicrocellular polyurethane with controlled load deflection and low compression set
DutyPrecise vibration-isolation mount, cushion, or pad that holds its set over many cycles
Compression setLow; holds its deflection and isolation over the life of the equipment
DeflectionControlled force-deflection; sized to deflect correctly at the operating load
EnvironmentIndustrial microcellular PU; the medical PORON grade is the patient-contact alternative
PropertiesForce-deflection and compression set per the maker TDS
Form factorsDie-cut to the mount geometry; adhesive-backed if specified
Where it lives in this application: a precise vibration-isolation mount or cushion where controlled force-deflection and low compression set matter, so the mount deflects the right amount and holds it over many cycles. Choose it where precise, durable isolation is wanted; a neoprene foam is the more general, lower-cost alternative. Where the part is patient-contact, the medical PORON grade is the referenced choice.

PORON Industrial is a microcellular polyurethane commonly used for precise, low-compression-set vibration-isolation mounts and cushions. Force-deflection and compression-set values are maker-TDS properties. For a patient-contact part, the medical PORON grade referenced to ISO 10993 by designation is the alternative. H-O converts to drawing and does not certify finished devices or equipment.

Cork / cork compositeStiff, anti-skid · compression-isolation pad · low creep under a foot or base
CompositionNatural cork or a cork-rubber composite; stiff, high-friction, low-creep
DutyAnti-skid compression-isolation pad under a foot, base, or instrument
FrictionHigh coefficient of friction; resists skidding and walking under vibration
CreepLow creep under sustained compression compared with a soft foam
EnvironmentDurable, dimensionally stable; a rubberized cork adds resilience
PropertiesCompression and density per the maker TDS
Form factorsDie-cut to the base footprint; adhesive-backed if specified
Where it lives in this application: an anti-skid compression pad under the foot or base of a piece of equipment, where a stiff, high-friction, low-creep pad keeps the equipment from walking under vibration. Choose it for an anti-skid base pad; a resilient foam is the softer isolation alternative where more deflection is wanted.

Cork and cork-composite (including rubberized cork) are stiff, high-friction, low-creep materials commonly used for anti-skid compression pads under equipment feet and bases. Compression and density are maker-TDS properties. H-O converts to drawing and does not certify finished devices or equipment.

High-temperature silicone sponge (BISCO)Holds properties hot · hot door, chamber, and line seals · continuous high temperature
CompositionCellular silicone sponge engineered to hold properties at continuous high temperature
DutyHot door, chamber, and line seals around heaters, steam generators, and hot surfaces
Service temperatureContinuous high temperature per the maker TDS; the choice where standard elastomers degrade
SealingSeals under modest closure force; recovers across cycles at temperature
FlammabilityFlame-retardant grades available where a flammability rating is needed
PropertiesCellular properties per ASTM D1056; service temperature per the maker TDS
Form factorsDie-cut sheet and strip, kiss-cut on liner with an adhesive face if specified
Where it lives in this application: a hot door, chamber, or line seal around a heater, steam generator, or hot surface where a standard elastomer would harden or degrade. A high-temperature silicone sponge holds its sealing and cushioning properties at continuous high temperature. Choose it where the continuous service temperature is the driver; verify the temperature limit on the maker TDS.

High-temperature silicone sponge is a cellular silicone commonly used for hot door, chamber, and line seals on high-temperature medical equipment. Service temperature and cellular properties are maker-TDS properties characterized per ASTM D1056; flame-retardant grades are available. This page frames temperature qualitatively. H-O converts to drawing and does not certify finished devices or equipment.

UHMW-PE engineering filmLow friction, abrasion-resistant · sliders and wear surfaces · quiet glide
CompositionUltra-high-molecular-weight polyethylene (UHMW-PE) engineering film and liner
DutyLow-friction slider and wear surface on drawers, rails, trays, and moving assemblies
FrictionLow coefficient of friction; glides quietly against a mating surface
AbrasionHigh abrasion resistance; resists wear over many cycles
ChemistryBroadly chemically resistant and easy to clean
PropertiesFriction and wear properties per the maker TDS
Form factorsDie-cut film, adhesive-backed and laminated to the moving face
Where it lives in this application: the low-friction wear surface on a drawer, rail, tray, or moving assembly that needs to glide quietly and resist abrasion over many cycles. A UHMW-PE engineering film is and adhesive-backed to the moving face. Choose it for a slider or wear surface; a durable foam is the choice for a bumper or end-stop.

UHMW-PE engineering film is an ultra-high-molecular-weight polyethylene commonly used for low-friction, abrasion-resistant slider and wear surfaces. Friction and wear properties are maker-TDS properties. H-O die-cuts and laminates the wear film to the moving face and converts to drawing; it does not certify finished devices or equipment.

Neoprene & Rebonded NeopreneDeck & bearing closures with some oil resistance · ASTM D1056 (e.g. 2A1, 2-5 psi CD)
CompositionClosed-cell neoprene (polychloroprene, CR) sponge; high-density rebonded neoprene where a load-bearing closure suits the joint
Grade exampleASTM D1056 grade 2A1; 25% compression-deflection roughly 2–5 psi (14–35 kPa) on the verified grade
Service rangeRoughly -40 F to +200 F, intermittent to +250 F, per the grade TDS
DutyClosures with light bearing and some oil resistance; the rebonded construction takes higher static load
Form factorsDie-cut closures and bearing-and-seal pieces; slit strips

Specify the cellular grade per ASTM D1056 and, for a bearing closure, the bearing area and load. Do not assume a given neoprene sponge is oil-resistant by name; the class on the TDS is what says so.

ManniGlas® Glass-Fiber Insulation Paper (1200 / 1900 / 1902 / 2000)Hot-spot layers & arc-adjacent barriers · inorganic glass-fiber paper
CompositionNonwoven glass-fiber insulation paper, per-grade constructions across the 1200–2000 designations
MethodsPer the maker TDS for each grade, method named per property
Defining propertyInorganic temperature endurance in a thin, die-cuttable paper
Form factorsDie-cut barriers, gaskets, and layers; slit rolls

Specify grade and thickness; per-grade temperature data lives on the maker TDS with the method named.

Engineering questions

Medical facility equipment materials FAQ

The questions equipment engineers ask when specifying a door gasket, an isolation pad, high-temperature insulation, or a slider surface. Answers are cautious and at the material level; H-O is an ISO 9001:2015 certified converter and does not certify finished equipment.

12 questions · click a question to expand its answer

Which gasket material survives repeated steam autoclave on a sterilizer door?

A medical or high-temperature silicone leads for a sterilizer or autoclave door. A medical silicone foam gives a soft, heat-tolerant door seal, a closed-cell silicone sponge gives a moisture-resistant seal where the closure force allows, and a high-temperature silicone sponge handles the hottest chambers; all hold their properties at the steam-cycle temperature and tolerate steam, ethylene oxide, gamma, and e-beam per the maker TDS.

A standard EPDM or neoprene will harden over repeated high-temperature steam cycles, which is why silicone is the choice for a daily-autoclave door. The number of cycles matters as much as the method: state the sterilization method, the cycle count, and the continuous service temperature on the drawing so the grade matches the life. Compression and recovery are characterized per ASTM D1056; grade limits are per the TDS on file.

H-O is an ISO 9001:2015 certified converter and does not certify finished equipment.

How do I size a vibration-isolation pad for a centrifuge or pump?

An isolation pad only isolates when it deflects the right amount at the operating load, so the load and the deflection at that load are the controlling inputs. A pad that is too soft for the load bottoms out and stops isolating; one that is too firm passes the vibration straight through.

Match the durometer, gauge, and footprint to the equipment load: a resilient neoprene foam is a durable, cost-effective isolation pad, and a microcellular polyurethane such as PORON Industrial gives controlled deflection and low compression set for a precise mount that holds its set over many cycles.

State the load on the pad, the footprint available, and the operating conditions, and H-O the pad to deflect correctly at the load. Cellular properties and load deflection are reported per ASTM D1056; grade-specific values are per the maker TDS. The finished-equipment isolation performance is the equipment maker's to validate.

What material holds up around a heater or steam line at continuous high temperature?

A high-temperature silicone or a glass-fiber insulation media is the choice, and which one depends on whether the part seals or insulates. For a hot seal or cushion, a high-temperature silicone sponge or solid silicone holds its sealing and cushioning properties at continuous high temperature where a standard elastomer would harden, crack, or degrade. For a thermal-barrier or insulation job around a hot surface, a glass-fiber insulation paper or high-temperature insulation media handles the heat.

The single most important thing to state is the continuous service temperature and the peak the part sees, because that is the factor that most often disqualifies a material. Verify the continuous-temperature limit on the maker TDS, since it varies by grade and form. This page frames service temperature qualitatively and defers grade-specific limits to the TDS on file.

Which low-friction material suits a drawer or rail slider?

An ultra-high-molecular-weight polyethylene (UHMW-PE) engineering film is the standard low-friction, abrasion-resistant slider and wear surface. It has a low coefficient of friction so a drawer or rail glides quietly, high abrasion resistance so it resists wearing a groove over many cycles, and it is broadly chemically resistant and easy to clean. H-O the UHMW film and adhesive-backs it to the moving face.

State the mating surface, the load on the slider, the number of cycles, and whether the part is adhesive-backed, so the right film thickness and construction are chosen. Where a quiet bumper or end-stop is also needed, a durable closed-cell or rebonded foam handles the travel stop. UHMW friction and wear properties are maker-TDS properties; the finished-equipment travel and wear performance is the equipment maker's to validate.

Do facility-equipment seals need an ISO 10993 or USP Class VI reference?

Usually not. Most facility-equipment parts (door gaskets, isolation pads, insulation, sliders) are infrastructure that does not touch a patient or a fluid path, so the biological-evaluation designations such as ISO 10993 and USP Class VI do not apply to them. Over-specifying a medical biological designation on a pure infrastructure seal adds cost without adding value.

The right reference for an infrastructure part is an FDA contact basis where it touches food or fluid and the ASTM cellular-rubber and durometer methods (ASTM D1056, ASTM D2240) for its mechanical properties.

The exception is a part that does touch a patient, a fluid path, or a sterile field: then it references the ISO 10993 endpoints or a USP Class VI designation by designation, evaluated by the material maker. State whether the part is patient-contact, fluid-contact, or pure infrastructure so H-O references the right grade, neither over-certifying nor under-documenting it. H-O makes no device or equipment clearance claim.

Silicone vs EPDM for a sterilizer or washer seal: when do I use each?

Use a medical or high-temperature silicone when the seal sees repeated steam autoclave or continuous high temperature: silicone holds its properties at the steam-cycle temperature and tolerates the sterilization methods, where EPDM hardens over repeated high-temperature cycles. Use an FDA-grade or standard EPDM when the part is wiped down rather than autoclaved daily, the temperature is moderate, and a lower material cost leads: EPDM resists weather, ozone, and many cleaning chemistries with an FDA composition basis.

The deciding questions are the service temperature and the sterilization method and cycle count. A daily-autoclave door wants silicone; a wiped-down cabinet panel can use EPDM. State both the temperature and the cleaning cycle on the drawing, and H-O references the grade that matches. Durometer is reported per ASTM D2240 and cellular properties per ASTM D1056.

Neoprene foam vs microcellular polyurethane for an isolation mount?

Both isolate vibration, but they fit different precision and cost points. A resilient closed-cell neoprene foam is a durable, cost-effective general isolation pad and bumper that absorbs vibration well across a range of loads. A microcellular polyurethane such as PORON Industrial gives more controlled force-deflection and low compression set, so it deflects a precise amount at the operating load and holds that set over many cycles without flattening, which suits a precise mount where the isolation has to stay consistent.

Choose neoprene foam for general, robust, lower-cost isolation, and microcellular polyurethane where precise, durable, low-set deflection matters. A cork or cork composite is the stiff, anti-skid alternative under a foot where high friction and low creep are wanted. Match the durometer, gauge, and footprint to the load. Cellular and force-deflection properties are per the maker TDS, characterized per ASTM D1056.

Can H-O laminate an adhesive backing so the slider or pad peels and places?

Yes. A slider film, isolation pad, bumper, or gasket that mounts on a flat face is commonly laminated with a pressure-sensitive adhesive on one face and kiss-cut on a release liner so the assembly line can peel and place it. H-O laminates the adhesive, the part outline, and kiss-cuts it on liner to your drawing. State which face carries the adhesive, the mating surface it bonds to, and whether the part ships on a liner in sheet or roll form.

For a UHMW slider, the adhesive backs the film to the moving face; for an isolation pad, it locates the pad on the base; for a gasket seated in a channel with enough clamp force, no adhesive is needed. The adhesive lamination and kiss-cut-on-liner are standard H-O converting operations, and the adhesive is selected for the substrate and the environment.

What thicknesses and geometries can H-O for facility equipment?

H-O converts sheet, slab, and roll stock to your drawing across the gauges and geometries these parts need: continuous perimeter door and chamber gaskets, isolation pads and mounts, insulation cut to a pattern, slider strips and films, and bumpers, in the gauge sized to the channel, the load, or the gap.

The converting toolkit is rotary and flatbed die-cutting, kiss-cutting on liner, laser and CNC waterjet cutting, adhesive lamination, slit-to-width, and kitting, holding the gauge and tolerance to the drawing and stacking to thickness where a laminated construction is needed.

State the outline, the gauge, the channel or land geometry, and any adhesive side, and H-O selects the converting method that fits the material and the part. Gauge and tolerance are held to the drawing; specific material gauge ranges are per the maker stock and the maker TDS.

My door gasket will not seal under the latch. What changed?

The usual cause is closure force: a door with a light latch cannot compress a firm, thick gasket enough to seal, so the gasket contacts only at points and leaks between them. A gasket only seals if the closure mechanism can compress it the right amount. The fix is to match the durometer and gauge to the available force, a soft silicone foam or a soft closed-cell grade for a light door, sized to the channel so the latch compresses it correctly, and a firmer grade only where a strong clamp allows.

If the gasket recently changed grade or the gauge increased, the latch may no longer have the travel or force to seal it; if it recently hardened, it may have exceeded its temperature or cycle limit. Specify the closure mechanism, the channel, and the service temperature so H-O the gasket to the durometer and gauge that compresses correctly. Durometer is reported per ASTM D2240.

Does H-O make finished medical equipment or certify it?

No. H-O Products is a precision converter: it makes the gaskets, isolation pads, insulation, and slider and wear parts to your drawing from material grades commonly used in medical facility equipment, under an ISO 9001:2015 quality management system. H-O is an ISO 9001:2015 certified organization; that certification governs the converting process, not an equipment or device clearance. H-O does not make finished medical equipment or devices and does not claim an ISO 13485 certification, an FDA device registration, or a cleanroom certification.

Material grades are referenced by designation, with ISO 10993 or USP Class VI applied at the material level only where a part is patient- or fluid-contact, and an FDA contact basis and the ASTM methods used otherwise; the material maker performs any biological evaluation. The finished-equipment file and any device clearance belong to the equipment or device maker. H-O supplies the converted parts, the material documentation, and lot traceability aligned to your requirements.

What do I send H-O to get a facility-equipment material quote?

Send the equipment drawing or a sample, the part location, and four things: the job (door or panel seal, vibration or noise isolation, high-temperature insulation, or slider and wear surface), the service temperature (continuous and peak), the cleaning and sterilization cycle (wipe-down, ethylene oxide, gamma, e-beam, or steam autoclave, with a cycle count), and the load or closure force and the geometry (channel or land, gauge, footprint, mating surface, and any adhesive side).

State whether the part is patient-contact, fluid-contact, or pure infrastructure so the right contact basis is referenced. Add prototype and annual volume. With that, engineering returns a material family, a converted-part approach, prototype lead time, and the documentation that can be aligned to your requirements. The quote form below has fields for each of these. Samples typically ship in 3 to 5 business days; standard production in about 2 weeks.

Definitions

Glossary: terms used on this page

Quick reference for the sealing, isolation, high-temperature, and wear terminology used throughout. Each entry links to the relevant standard or designation where applicable.

Continuous service temperature

The temperature a material can hold continuously without losing its properties, as opposed to a brief peak it can survive. For facility equipment around heaters and steam lines, the continuous service temperature is the factor that most often disqualifies a material: silicone holds its properties at high continuous temperature where a standard elastomer hardens or degrades. The limit is a maker-TDS property that varies by grade and form.

Compression set

The permanent deformation a material retains after being held compressed, especially at temperature. A door gasket with high compression set loses its recovery and leaks after repeated cycles; an isolation pad with high set flattens and stops isolating. Choosing a grade with low compression set for the temperature and cycle count is central to a durable facility part. Compression set is characterized per ASTM D1056 for cellular rubber.

Load deflection

How much an isolation pad or seal deflects under a given load, which sets how much it isolates or seals. A vibration-isolation pad only isolates when it deflects the right amount at the operating load: too soft and it bottoms out, too firm and it transmits vibration. Matching the durometer, gauge, and footprint to the load is the discipline of sizing an isolation pad. Load-deflection behavior is reported per ASTM D1056.

Microcellular polyurethane (PORON)

A fine-celled polyurethane foam with controlled force-deflection and low compression set, used where precise, durable deflection matters. PORON Industrial is the industrial grade for vibration-isolation mounts and cushions; PORON Medical is the patient-contact grade referenced to ISO 10993 by designation. It deflects a precise amount at load and holds its set over many cycles. Force-deflection values are per the maker TDS.

UHMW-PE (ultra-high-molecular-weight polyethylene)

A polyethylene with very long polymer chains, giving a low coefficient of friction, high abrasion resistance, and good chemical resistance. As an engineering film or liner it is the standard low-friction slider and wear surface on drawers, rails, and moving assemblies, and adhesive-backed to the moving face. Friction and wear properties are per the maker TDS.

Closed-cell foam

A cellular material whose gas cells are sealed from one another, so it resists moisture and liquid passage and seals against splash and water. Closed-cell silicone and neoprene foams are used for moisture-resistant equipment seals and resilient isolation pads. The opposite, open-cell foam, is permeable and is used for wicking or filtration, not for moisture sealing or load isolation.

ISO 10993 (where patient-contact, by designation)

The international standard family for the biological evaluation of medical devices. It applies to a facility-equipment part only where that part touches a patient, a fluid path, or a sterile field; most infrastructure parts do not need it. Where it applies, a material grade is referenced to ISO 10993 by designation, meaning the material maker evaluates the grade; the equipment maker owns the finished-equipment evaluation.

USP Class VI

The strictest of the USP plastics classes, based on the in-vivo biological-reactivity tests of USP <88>. A material-level screen the material maker performs, relevant only where a facility part is patient- or fluid-contact; it is a reference point for a grade, not a finished-equipment clearance. On this page it is cited by designation only.

FDA-grade (composition basis)

A description of a material's composition and contact basis (for example a rubber meeting FDA 21 CFR 177.2600 for repeated contact), not a device or equipment clearance. An FDA-grade gasket material is made from ingredients that meet a relevant FDA contact regulation; it does not by itself mean the finished equipment is cleared. The right reference for an infrastructure part that touches food or fluid, at the material level.

Durometer (Shore A)

A measure of an elastomer's hardness, reported on the Shore A scale per ASTM D2240. For a door seal, durometer sets how much closure force is needed; for an isolation pad, it sets the deflection at load. A low durometer (softer) seals or deflects under light force, a higher durometer (firmer) needs more force but resists bottoming out. Matching durometer to the closure force or load is a key selection factor.

IP rating / ingress (IEC 60529)

The two-digit Ingress Protection code defined by IEC 60529 that rates an enclosure against solid-object and water ingress, relevant to equipment seals exposed to splash or wash-down. The rating belongs to the assembled equipment, the gasket, channel, and closure force together, not to a material on its own. A perimeter gasket is the part H-O supplies toward an equipment ingress target.

Converter (die-cut)

A manufacturer that takes maker stock (sheet, slab, roll) and converts it to a finished part by die-cutting, kiss-cutting, laser or waterjet cutting, laminating, slitting, and kitting, to a customer's drawing. H-O is a precision converter; it does not mold or extrude the elastomer, and it does not make finished medical equipment. It supplies the converted gasket, isolation, insulation, and wear parts and the material documentation, under an ISO 9001:2015 quality management system.

Last updated · Reviewed by H-O Products engineering (ISO 9001:2015 certified converter, Winsted, CT).

Citations

Standards, designations & technical references

The standards, designations, and material references cited throughout this page. Standards editions current as of June 2026; verify against the publishing body before final spec. Material grades are referenced to the biological-evaluation frameworks by designation only where a part is patient- or fluid-contact; otherwise an FDA contact basis and the ASTM methods apply.

H-O is an ISO 9001:2015 certified converter and does not independently certify materials or finished equipment. No competitor company names appear on this page; material makers are named in this References block only.

ASTM D1056

Standard Specification for Flexible Cellular Materials, Sponge or Expanded Rubber. The reference for cellular-rubber properties (compression, density, recovery, load deflection) used to characterize the silicone, EPDM, and neoprene seals and isolation pads on this page. astm.org/d1056

ASTM D2240

Standard Test Method for Rubber Property, Durometer Hardness. The Shore A method behind the durometer values used to match a seal to the closure force and an isolation pad to the load. astm.org/d2240

FDA 21 CFR 177.2600

Rubber articles intended for repeated use, a composition basis for an FDA-grade rubber. Describes permissible ingredients for repeated food/fluid contact; it is a material composition basis, not a device or equipment clearance. ecfr.gov (21 CFR 177)

ISO 10993-1

Biological evaluation of medical devices, Part 1: Evaluation and testing within a risk-management process. Applies only where a facility part is patient- or fluid-contact; it classifies such a part by contact type and duration. Referenced by designation at the material level where it applies. iso.org (ISO 10993-1)

USP Class VI / USP <88>

Biological Reactivity Tests, In Vivo (USP <88>), the basis of the USP Class VI plastics designation. A material-level reactivity screen the material maker performs, relevant only where a facility part is patient- or fluid-contact; cited by designation, not as a clearance. usp.org

IEC 60529

Degrees of protection provided by enclosures (IP Code). Defines the two-digit ingress rating for solid-object and water protection that an equipment door or panel gasket helps an assembled enclosure achieve. webstore.iec.ch (IEC 60529)

ISO 9001:2015

Quality management systems, Requirements. The standard H-O's converting quality management system is certified to. It governs the converting process and documentation, not a medical-equipment or device clearance. iso.org (ISO 9001:2015)

Rogers PORON & BISCO silicones (maker TDS)

Supplier technical data for PORON microcellular polyurethanes (industrial and medical) and BISCO silicone foams and sponges, including the force-deflection, service-temperature, and sterilization-tolerance references. Material-maker data, cited here as a reference; H-O converts the stock to drawing. rogerscorp.com

UHMW-PE engineering film (maker TDS)

Supplier technical data for ultra-high-molecular-weight polyethylene engineering film and liner, including the friction, abrasion-resistance, and chemical-resistance references used for slider and wear surfaces. Material-maker data, cited here as a reference; H-O die-cuts and laminates the film to drawing. astm.org (UHMW-PE, ASTM D4020)

Updated . Standards editions, designations, and links current at publication; verify against the publishing body before final spec. Material designations are referenced at the material level; lot-specific documentation aligned to your requirements is available on request.

Before you request a quote

What to send H-O for a facility-equipment material quote

The faster H-O can recommend a material and converted-part approach, the more of this you can include up front. None of it is required to start, the quote form below walks you through it.

The job and the part

Which job (door or panel seal, vibration or noise isolation, high-temperature insulation, or slider and wear surface); the part location on the equipment (door channel, chamber, isolation foot, hot line, or moving rail); an equipment drawing (DXF, STEP, or PDF) or a sample part; and whether the part carries an adhesive, which face, the mating surface, and whether it ships kiss-cut on liner.

The environment and the build

The service temperature (continuous and peak); the cleaning and sterilization cycle (wipe-down, ethylene oxide, gamma, e-beam, or steam autoclave, with a cycle count); the load on an isolation pad or the closure force and ingress (IP) target on a seal; whether the part is patient-contact, fluid-contact, or pure infrastructure; and the geometry and quantity (gauge, footprint, channel or land, prototype and annual volume).

Quote request

Get a facility-equipment material quote

Send a drawing, BOM, or spec sheet. We typically respond within one business day with a material-family recommendation, prototype lead time, and TDS and designation verification against your job, service temperature, cleaning cycle, and geometry.

Contact
Company address
Your application
Part & quantity
Typical response in one business day. Samples typically 3–5 business days; production in about 2 weeks.

Material data & designations. All durometers, gauges, service temperatures, and sterilization tolerances on this page are taken from the source material maker's technical data sheets and the cited standards and designations.

Grade-specific durometer, compression-set, service-temperature, and load-deflection values are reported on the TDS on file for each grade; this page frames them qualitatively and references the test methods and designations (ASTM D1056, ASTM D2240, FDA contact basis, IEC 60529, and ISO 10993 or USP Class VI where a part is patient- or fluid-contact) rather than quoting numbers that vary by grade.

Material grades are referenced to the biological-evaluation frameworks at the material level only where a part is patient- or fluid-contact, where the material maker performs the evaluation; the equipment maker owns the finished-equipment file. H-O is an ISO 9001:2015 certified organization; it does not claim an ISO 13485 certification, an FDA device registration or clearance, or a cleanroom certification, and it does not certify finished equipment or devices.

Conversion scope. H-O die-cuts and converts sheet, slab, and roll stock to drawing in Winsted, Connecticut: die-cut and kiss-cut-on-liner gaskets, isolation pads, insulation, and slider parts, slit rolls, laminated and adhesive-backed constructions, and kits, with material traceability and lot-code documentation. H-O does not mold or extrude elastomers in-house and does not make finished medical equipment; molded or extruded profiles are coordinated through a partner network. Lead-time and minimum-run details are on the process strip and in the quote form above.

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