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How to Spec Window and Door Sealing Components: What to Send H-O for a Quote
Window and door component RFQs stall for a predictable reason: they describe the part geometry and leave out the service the part has to survive. What H-O quotes is not a strip of foam but a sealing system tied to a certification target, a frame finish, a sealant package, and an exposure that will spend years attacking the chemistry. This is the checklist the applications team works from, drawn from the parent page own quote-information list, with what engineering does with each item and what comes back.
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What turns a window-component RFQ into a quotable drawing?
The Window and Door Systems page frames component selection as six independent constraints that all have to be satisfied at once. The checklist below collects the information that resolves them, so the quote prices the right grade rather than a generic catalog line. Send as much as you have; partial specs are welcome, and engineering fills the gaps during quote review.
| Send this | What it decides |
|---|---|
| 1. NAFS class and Design Pressure (PG) target | The test gates: air leakage per ASTM E283, water penetration per ASTM E331/E547, structural per ASTM E330. Class decides how hard the tests press on the weatherstrip and weep system, treated as a unit-level target, not a component certification. |
| 2. The interface or interfaces | The family and zone: glazing tape, setting blocks, weatherstrip, corner gaskets, chimney blocks, weep baffles, cavity insulation, or hardware pads. A window can carry up to nine; name the ones you are quoting. |
| 3. Frame substrate and finish | The adhesive chemistry: bare or anodized aluminum and rigid vinyl accept a general-purpose acrylic; powder-coated aluminum and low-surface-energy composites want an LSE-variant PSA; unsealed wood needs an adhesive that does not starve into the cellulose. Send the substrate TDS or a sample. |
| 4. Sealant package at adjacent joints | The compatibility veto: the IGU edge seal, back-bedding, and perimeter caulk can migrate plasticizer into or out of a foam. Plasticized PVC near silicone is the classic risk; the ASTM C1087 framework settles it. |
| 5. Exposure and climate zone | The EPDM grade and the baffle coating: RE-series for UV and ozone exposure, 553/563 for standard duty; an acrylic-coated weep baffle for south-facing sills, uncoated for shaded weeps. |
| 6. Closure hardware and force budget | The ASTM D1056 firmness grade: soft grades for lightly latched sash, firmer where multi-point hardware supplies real compression; the gasket should work mid-range. |
| 7. Setting-block requirements | The durometer band and length: 80 to 90 Shore A per ASTM C864, length from the GANA rule against glass area, two blocks at the quarter points. |
| 8. Geometry: DXF, STEP, or PDF, or a sample part | The die program: pocket depth, weatherstrip profile, corner treatment, weep and cavity sections, and the hardware standoff for cushion pads. |
| 9. Attachment preference | Plain, PSA-backed, or kiss-cut on liner for line peel-and-place; the presentation decides assembly speed. |
| 10. Prototype and production volumes | Converting method and price structure. Every part is made to order; prototype quantities through full production runs are equally accepted, and MOQ varies by material and part. |
What engineering does with the list
Items 1 and 2 fix the test gates and the zone. Item 3 narrows the adhesive: H-O Mount double-coated tape with an LSE variant for coated frames, peel reported per ASTM D3330. Item 4 flags the sealant pairings to verify, with plasticizer-free BGT crosslinked PE as the conservative bedding default beside silicones and PVC foam glazing tape the one to check first.
Item 5 picks the RE-series EPDM against the 553/563 grades and the reticulated PU baffle coating. Items 6 and 7 size the firmness and the solid silicone setting block; items 8 and 9 become the converting plan, including the ClipFoam chimney block die-cut for compression fit; and item 10 sets method and pricing. The reply cites each recommended grade TDS values with the test method named.
What happens after you send it
- Drawing review. Engineering reviews the NAFS class and PG target against the vendor TDS: compression range, profile geometry, exposure, sealant compatibility, and any flammability class.
- Material direction and quote. A family and grade direction with the TDS attached, the converted format (die-cut, kiss-cut on liner, corner-matched, laminated), and pricing at your quantities.
- Samples. Typically 3 to 5 business days for common die-cut configurations on materials we keep on hand.
- Production. Standard runs ship about two weeks after drawing approval, including kiss-cut-on-liner and laminated configurations; expedited service is available when a certification window is closing. Ongoing parts run with material traceability and lot-code TDS records.
Documentation available on request: material technical data sheet, certificate of conformance, lot traceability, and first-article inspection, under our ISO 9001:2015 certified quality management system. H-O die-cuts and converts; we do not extrude or mold elastomers in-house, extruded profiles are coordinated through a partner network, and NAFS performance classes belong to the complete unit design under the AAMA/WDMA/CSA evaluations.
The mistakes this checklist prevents
| Spec mistake | What it causes | Checklist item that catches it |
|---|---|---|
| Geometry-only RFQ, no class | A quote for a foam strip, not a seal matched to the test it must pass | Items 1 and 2 |
| Frame finish left off | A general-purpose acrylic on a powder-coat face peels under its own preload | Item 3 |
| Sealant package not named | Plasticizer migration stains the sightline or softens the foam months later | Item 4 |
| Exposure unstated | An uncoated baffle or standard EPDM in a UV-exposed sill degrades early | Item 5 |
| Setting block called "silicone" only | A soft block creeps and loads the IGU edge seal | Item 7, band and length named |
| One grade swapped mid-run | Closing force changes and air-leakage results scatter across the lot | Item 6, one grade held |
Frequently asked questions
What information does H-O need to quote a window or door component?
The geometry (DXF, STEP, or PDF) or a sample part, plus the service context: the NAFS class and Design Pressure target, the interface or interfaces, the frame substrate and finish, the sealant package at adjacent joints, the exposure and climate zone, the closure hardware and force budget, any setting-block requirements, the attachment preference, and the volumes. Partial specs are welcome; engineering fills the gaps during quote review. Every part is made to order, and lead times are confirmed with your quote.
Why does the NAFS class matter so much for component selection?
Because the class and Design Pressure set every test gate the components have to support: air leakage per ASTM E283, water penetration per ASTM E331/E547, and structural performance per ASTM E330. A CW-class water test pressurizes the weatherstrip line and the weep system far harder than an R-class test, so the same geometry can need different material grades at different classes. Putting the class and PG on the RFQ lets engineering match the grades to the gates rather than to a generic catalog line.
Will a standard acrylic tape bond to powder-coated aluminum frames?
Not reliably. Powder coat, many paints, and olefin-rich composites are low-surface-energy faces: a general-purpose acrylic beads instead of wetting out, so the real contact area is a fraction of the apparent area and the bond peels under its own preload. For those faces an LSE-variant acrylic PSA is available across the tape families. Send the frame substrate TDS or a physical sample with the RFQ and H-O engineering qualifies the bond on the real face; peel is reported per ASTM D3330 on the tape TDS.
Can H-O cross-reference my existing supplier part numbers?
In most cases, yes. Send the incumbent TDS, part drawings, or physical samples and engineering cross-references to a family we convert, matching on the spec-relevant properties: foam chemistry and cell structure, ASTM D1056 compression-deflection class, thickness class, adhesive system, and the aging data lines relevant to the position.
It is an engineering cross-reference, not a guaranteed drop-in, verified against the vendor TDS for your application before quoting, and for certification-sensitive positions we ask for the NAFS class and test history so re-qualification risk is called out honestly.
Send the checklist, get a window and door component quote
Attach the geometry and as many of the ten items as you have. A sample part works when no drawing exists, and partial specs are welcome.
Samples typically ship in 3 to 5 business days for common die-cut configurations on materials we keep on hand; standard production runs about two weeks after drawing approval; expedited service is available. MOQ varies by material and part.
Family-owned in Winsted, Connecticut since 1971 · ISO 9001:2015 certified · OEMs worldwide send us a drawing — and get back their part.
Related reading
Request a quote for your window & door sealing part
Send H-O your drawing or describe the part—engineering reviews every RFQ and converts samples on your geometry.
Last updated · Reviewed by H-O Products engineering (ISO 9001:2015 certified converter, Winsted, CT).
References
- NAFS-2022 / AAMA/WDMA/CSA 101/I.S.2/A440-22 (performance classes and Design Pressure); ASTM E283 (air leakage); ASTM E330 (structural); ASTM E331 / E547 (water penetration).
- ASTM C864 Option I (setting blocks); GANA Glazing Manual (placement and sizing); ASTM D1056 (compression-deflection grades); ASTM D3330 (peel adhesion); ASTM C1087 (accessory-sealant compatibility framework); UL 94 (flammability classes, per grade).
- Manufacturer technical data sheets for the glazing tape, setting-block silicone, EPDM and neoprene weatherstrip, reticulated baffle, chimney block, and H-O Mount families named on the parent application page.
This checklist supports a quotation workflow; it is not glazing or fenestration design guidance for any specific unit, and NAFS performance classes belong to the complete unit design under the AAMA/WDMA/CSA evaluations. Grade-level values are confirmed on the manufacturer's current technical data sheet at quote time. All parts are custom manufactured to order; minimum production run quantities vary by material and part.
H-O is a die-cut converter, not a raw-material producer, does not extrude or mold elastomers in-house, and does not certify finished units.