How to Spec an NPWT or Wound-Interface Material: What to Send H-O for a Quote | H-O Products
H-O Products

Home › Blog › Wound Care & NPWT › How to spec an NPWT material

Wound Care & NPWT · How to Spec

How to Spec an NPWT or Wound-Interface Material: What to Send H-O for a Quote

By the H-O Products applications engineering team · Updated June 2026 · ~7 min read

820x360|

An NPWT or wound-care material part quotes fastest when the request names the material role and states the property, the geometry and any documentation up front. A converter cannot select an interface foam, a drape film or a skin-contact border from a part name alone, because each is a different material with a different driving property such as pore range, barrier behavior or peel.

This guide is the eight-item checklist that turns a wound-care RFQ into a same-direction quote and a sample on your geometry, with everything kept at the material level and the device left to you.

Request a quote →

What does H-O need to quote an NPWT or wound-interface material?

An NPWT or wound-care material part quotes fastest when the request names the material role and states the property, the geometry and any documentation up front. A converter cannot select an interface foam, a drape film or a skin-contact border from a part name alone, because each is a different material with a different driving property. The checklist below turns a wound-care RFQ into a same-direction quote and a sample on your geometry. Everything is kept at the material level; the device and its use are yours.

The eight things to send

  1. The material role. Name what you need quoted: interface foam, drape film, skin-contact border, or support and offloading pad. If it is a set, list each; each is a separate selection.
  2. The geometry. A die line, a DXF, a PDF with dimensions, or a marked-up sketch, including any cutouts, the outline and where the adhesive is.
  3. Gauge and thickness. The foam thickness, the film gauge or the pad thickness you need.
  4. The foam property (for interface foam). The pore range you need (pores per inch) and the open-cell structure, plus any coated grade preference.
  5. The drape property (for drape film). The barrier and the moisture-vapor transmission behavior you need over the wear window.
  6. The adhesive property (for a skin border). The wear window, the backing and the clean-release need, so peel and the construction can be matched.
  7. Material-level documentation needed. State whether you need an ISO 10993 or ISO 10993-10 designation, a USP Class VI designation, or an FDA-grade composition basis, all at the material level. The device file stays with you.
  8. Quantities and dates. Prototype count plus annual volume, and your sample and production dates.
One detail that saves a revision. For the interface foam, state the pore range in pores per inch. Foam ordered without a stated pore range is the most common reason a wound-care quote has to go back, because the open-cell structure is grade-specific.

What you get back

With the checklist in hand, H-O returns a cautiously framed material direction for each role, a converting plan (die-cut, kiss-cut, laser or rotary, laminated, kitted on liners), and samples on your geometry for common configurations. Grade-specific values and any material-level documentation are confirmed against the manufacturer's current technical data sheet; the finished device, its indications and its regulatory file remain with you.

We name a family only where it is catalog-verified, and we make no claim that any material treats, heals or manages a wound. For example, an interface foam commonly maps to medical reticulated open-cell polyurethane foam, confirmed to your grade on the data sheet.

What H-O does not decide for you

  • The device and its indications. The material direction is the foam, film or adhesive; the device, its use and its clinical performance are yours.
  • The biocompatibility file. The material-level ISO 10993 designation is the material maker's; the finished-device file is yours.
  • The seal. The drape material has a barrier; the seal is a property of the finished construction.
  • Grade-level numbers. Pore range, moisture-vapor transmission and peel are read on the maker's current data sheet, not invented in the quote.

A model RFQ

"We need three die-cut materials for an NPWT device: a reticulated open-cell polyurethane interface foam, stated pore range, about 10 mm thick; a closed conformable drape film with a controlled moisture-vapor transmission; and a skin-contact adhesive border for a multi-day wear window on a breathable backing. Geometry attached as DXF for each part with the adhesive areas marked. We need the foam and the skin adhesive to carry ISO 10993 material-level documentation on their data sheets; our device file and indications are in house.

Quantities 50 prototype plus 25,000 per year; samples in three weeks." That request can be directioned and sampled without a clarifying round, with all properties kept at the material level.

Ready to spec an NPWT or wound-interface material?

Send the material role, the geometry, the pore range or drape barrier, the wear window and any material-level documentation you need. We will return a family direction for each material and convert samples on your geometry.

Request a quote → Send a drawing Ask for a material recommendation

Samples typically ship in 3 to 5 business days for common die-cut configurations; standard production runs about two weeks; special orders are quoted to the job.

Family-owned in Winsted, Connecticut since 1971 · ISO 9001:2015 certified · OEMs worldwide send us a drawing — and get back their part.

Related reading

NPWT dressing stack cross-section Section through a wound-care NPWT dressing on skin. From the wound bed upward: a wound-contact interface of biocompatible reticulated open-cell polyurethane foam, an absorbent and wicking transfer layer, a foam manifold that distributes negative pressure, and a top drape film with a boss port where tubing connects through a solid medical silicone port seal. A die-cut skin-adhesive border seals the dressing perimeter to intact skin on both sides. Material legend below. MEDICAL · WOUND CARE & NPWT NPWT dressing stack — sealed to the skin, port to pump NPWT (negative-pressure wound therapy): layer order over the wound bed, and the perimeter seal to intact skin. tubing to NPWT pump (by the kit maker) intact skin (peri-wound) intact skin wound bed 4 · Top drape film + port die-cut to the seal outline 3 · Foam manifold reticulated open-cell PU (polyurethane) — distributes the negative pressure 2 · Absorbent / transfer layer reticulated PU — wicks & holds exudate 1 · Wound-contact interface biocompatible reticulated PU foam solid medical silicone port-seal gasket at the drape boss (die-cut) exudate wicks up into the absorbent layer skin-adhesive border — seals the dressing perimeter to intact skin (die-cut) H-O converts the foam, drape, and adhesive parts; the device maker owns the finished-device file and all clinical claims. Skin / peri-wound Wound-contact reticulated PU foam Absorbent / wicking PU Manifold foam — open-cell PU Drape film Die-cut seal parts: adhesive border · port seal Representative — validate in the application. H-O Products · Wound Care & NPWT
ApplicationWound Care & NPWT Materials (application page)Read → GuideFoam, Drape or Adhesive? Choosing Materials for NPWT and Wound-Care DevicesRead → GuideNPWT Material Stack by Design: Selecting Interface Foam, Drape and AdhesiveRead → Wide reference image of die-cut medical materials across the vertical: skin-interface cushions, medical-silicone gaskets, reticulated wound foam, orthotic cushi IndustryMedical & clean components overview (industry hub)Read →

Frequently asked questions

What do I need to send H-O to quote an NPWT material?

Name the material role (interface foam, drape film, skin-contact border, or support pad), send the geometry with cutouts and adhesive areas, the gauge or thickness, the foam pore range or the drape barrier and moisture-vapor behavior, the adhesive wear window and backing, the material-level documentation you need (ISO 10993, USP Class VI by designation), and your quantities and dates. With that, H-O returns a material direction per role and samples on your geometry. The device and its use stay with you.

Do I have to choose the material before I ask for a quote?

No. Name the role and the property you need (pore range, barrier, peel), and H-O recommends a cautiously framed material family direction. We name a family only where it is catalog-verified, and we confirm grade-specific values and any material-level documentation against the manufacturer's current technical data sheet. The finished device, its indications and its file stay with you, and we make no claim that any material treats or heals.

Can H-O provide documentation for an NPWT material?

H-O can request and pass through the material maker's material-level documentation, such as an ISO 10993 or ISO 10993-10 designation or a USP Class VI designation, where the named grade carries it on its data sheet. That documentation describes the material. The finished device, its indications, its biocompatibility assessment and its regulatory file are owned by you as the device maker. H-O is a converter and an ISO 9001:2015 certified organization; it is not an ISO 13485, FDA or cleanroom certified provider.

Request a quote

Request a quote for your NPWT or wound-interface material

Send H-O your material role and geometry—engineering reviews every RFQ, recommends a family per material, and converts samples on your 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.

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

References

  • ASTM D3574, Standard Test Methods for Flexible Cellular Materials: Slab, Bonded, and Molded Urethane Foams. ASTM International.
  • ISO 10993-1, Biological Evaluation of Medical Devices, Part 1: Evaluation and Testing Within a Risk Management Process. International Organization for Standardization (material-level designation).
  • ISO 10993-10, Biological Evaluation of Medical Devices, Part 10: Tests for Skin Sensitization. International Organization for Standardization (material-level designation).
  • USP Class VI, United States Pharmacopeia, Biological Reactivity Tests, In Vivo (material-level designation).
  • Manufacturer technical data sheets for the named material families; grade-specific values and material-level documentation are confirmed on the maker's current TDS.

This article describes material families H-O Products converts for negative pressure wound therapy (NPWT) and wound-care devices and cites published standards by designation (ASTM D3574 for urethane cellular materials, ISO 10993 and USP Class VI as material-level designations, ASTM E96 for water-vapor transmission, ASTM D3330 for peel adhesion). It describes foam, drape and adhesive materials only.

It makes no patient, clinical or therapeutic claim, and no claim that any material treats, heals, manages or improves a wound or any condition; wound healing, therapy and clinical outcomes are the responsibility of the finished device and its maker, not of any material described here.

The material maker characterizes and documents a grade on its current technical data sheet; the device maker owns the finished device, its indications, its biocompatibility assessment and its regulatory file. H-O Products is a precision die-cut converter, not a raw-material producer and not a medical-device manufacturer; this is not, and does not imply, an ISO 13485 certification, an FDA device registration, a cleanroom certification or a biocompatibility certification.

The only certification claimed is ISO 9001:2015, which governs the converting process. Grade-specific values are confirmed against the manufacturer's current technical data sheet and an engineering drawing review. All parts are custom manufactured to order and minimum production run quantities apply.

H-O Products Corp · Precision die-cut converting · Winsted, CT · ISO 9001:2015 certified organization