Custom gaskets
Custom Gaskets, Waterjet-Cut to Your Drawing
Custom gaskets are cut to your drawing on a waterjet in Orange, California from the sheet the print names: rubber, sponge, cork, fiber, PTFE or foam. There is no die to build, so one prototype and a production run go through the same setup. Send the DXF or PDF and the quantity and a Conquest representative quotes it.
What to send for a custom gasket quote
A quote needs six things. The drawing is the tool, so a DXF gets the cleanest cut; a PDF or a dimensioned sketch works. If no file exists, send a photo of the part beside a ruler, or the sample, and a Conquest representative tells you what is needed to quote it.
- Drawing. A DXF or DWG of the outline, or a PDF with the outside and inside dimensions, bolt pattern and hole sizes. A photo of the part beside a ruler is the fallback.
- Material or specification callout. The sheet by name (EPDM, cork-nitrile, PTFE, silicone sponge) or by callout: an ASTM D2000 line callout for rubber, an ASTM F104 callout for fiber and PTFE sheet, an ASTM D1056 grade for sponge, or the military or AMS document the print names.
- Thickness. The sheet thickness in inches or millimeters. Common gasket gauges run from 1/32 in to 1/4 in; sponge to 2 in.
- Quantity. The quantity now, and the expected annual usage or release schedule if there is one.
- Application. The medium, the temperature and the pressure. When the print names only a material, name the grade or specification you want quoted.
- Adhesive backing. Yes or no, and which face. Adhesive-backed sheet is cut with the liner on.
Process
How a custom gasket is made here
Send the drawing
Upload the DXF, DWG or PDF with the quote request. Do not upload a drawing that carries an export-control marking; call us instead.
Source the sheet
The sheet the print names, by material or callout, is bought from the sheet makers we buy from, and the thickness and any adhesive are confirmed.
Quote
A Conquest representative replies with a quote for the quantity on the request.
Cut on the waterjet
The file drives the waterjet in our Orange, California shop. Pure water, no heat, a square edge and no die.
Inspect and ship
Parts are checked against the drawing and packed flat. Repeat orders run from the same file.
Materials
Materials we cut
Every sheet material has its own page with the cited temperature range, thicknesses, formats and callouts. The table is the short form; the pages carry the sources. The full index with typical uses is on the gaskets hub.
| Material | Temperature range | Designations |
|---|---|---|
| Buna-N (Nitrile) | -34 C to 100 C; low-temperature compounds to -57 C; short term to 121 C (Parker® ORD 5700) | ASTM D1418 NBR; ASTM D2000 BF/BG/BK |
| EPDM | -57 C to 150 C; steam compounds to 204 C (Parker ORD 5700) | ASTM D1418 EPDM; ASTM D2000 BA/CA/DA; FDA 21 CFR 177.2600, NSF/ANSI 51 and 61, USP Class VI on specific compounds |
| Neoprene | about -40 C to 121 C (Parker ORD 5700) | ASTM D1418 CR; ASTM D2000 BC/BE |
| PTFE | Set by the grade sheet | ASTM D3308, ASTM D3294; ASTM F104 Type 4 Class 1, 2 and 5 |
| Silicone | -54 C to 204 C; special compounds -115 C and 260 C (Parker ORD 5700) | ASTM D1418 VMQ; ASTM D2000 FE/GE; A-A-59588; SAE AMS 3302 |
| Viton® (FKM) sheet | -26 C to 204 C; low-temperature grades to -46 C (Parker ORD 5700) | ASTM D1418 FKM; ASTM D2000 HK; SAE AMS-R-83248 |
| Closed-cell sponge (neoprene, EPDM, blends) | -40 C to 93 C (-40 F to 200 F) | ASTM D1056 Type 2 grades |
| Cork-rubber | -30 C to 110 C (-22 F to 230 F) in fluids | ASTM F104; MIL-C-6183 / SAE AMS-C-6183 |
| Silicone sponge | -55 C to 200 C (-67 F to 392 F) | SAE AMS3195 (medium), AMS3196 (firm) |
| Compressed non-asbestos fiber (CNAF) | -73 C to 205 C continuous (-100 F to 400 F) | ASTM F104 (F71 line callouts) |
| Expanded PTFE (ePTFE) | Set by the grade sheet; the page cites one maker sheet | ASTM F104 (fluoropolymer group) |
| Filled PTFE | Set by the grade sheet; the page cites one maker sheet | ASTM F104 (fluoropolymer group) |
| Flexible graphite (homogeneous and tanged) | To 450 C (842 F) in air, homogeneous | ASTM F104 (flexible graphite group); maker grades |
| PORON® polyurethane foam | Set by the grade sheet; the page cites the Rogers PORON sheet | Rogers PORON grade numbers |
| Wool felt (cut by a partner) | -62 C to 93 C (-80 F to 200 F) | SAE J314 grades F-1 to F-26 |
| Red rubber (SBR) | No approved range on file; the sheet maker's data sheet governs | MIL-PRF-1149; ASTM D2000 AA |
| Butyl (IIR) | -59 C to 121 C (Parker ORD 5700 family range) | ASTM D2000 AA (M1AA 507, 607, 710) |
| Hypalon® / CSM | -40 C to 120 C (-40 F to 248 F) | ASTM D1418 CSM; ASTM D2000 CE |
| Cellulose / vegetable fiber | To 121 C (250 F) | ASTM F104; MIL-G-12803; HH-P-96 |
| Mica (cut by a partner) | To 950 C (1742 F) unreinforced; to 900 C (1652 F) tanged | Maker grade callouts |
| Adhesive-backed, peel-and-stick (PSA) lamination | Adhesive to 149 C (300 F) long term on the 3M sheet; base sheet governs | 3M® 467MP / 468MP and equivalents; base sheet callout |
| Conductive silicone and fluorosilicone (EMI) | Set by the grade sheet and MIL-DTL-83528 type; the page cites each | MIL-DTL-83528 type letters A to M by filler |
Tolerances and edge
Conquest Seal's waterjet capability is a typical tolerance of plus or minus 0.010 in on dimensions under 12 in, opening to plus or minus 0.015 to 0.020 in on large parts or on sheet over 0.5 in thick, with a square edge and a kerf of 0.004 to 0.007 in. Tighter figures on small, thin parts are quoted case by case. Felt, flexible graphite and mica are not cut on our waterjet; those parts are cut by the sheet maker or a cutting partner, and the quote says which. Source: Conquest Seal waterjet capability [S1].
Every order ships with a certificate of conformance naming the part number, the specification, the manufacturer, the lot and the quantity.
Custom gasket questions
Do you make custom gaskets or supply them?
Both. Sheet gaskets are cut in our own shop on the waterjet, from sheet supplied by the sheet makers we buy from. Molded and lathe-cut parts are supplied from our manufacturers.
Does a custom gasket need a die?
No die is made. The DXF or drawing drives the waterjet, so a prototype and a revision go through the same setup as a repeat.
What file formats do you accept?
DXF is best, then DWG, then a dimensioned PDF. If no file exists, send a photo of the part beside a ruler, or the sample, and a Conquest representative tells you what is needed to quote it.
Which materials can be waterjet-cut?
Solid rubber in every common polymer, closed-cell sponge, cork-rubber, compressed fiber, cellulose fiber, PTFE in virgin, filled and expanded form, and polyurethane foam. Felt, flexible graphite and mica are cut by the sheet maker or a cutting partner.
How do I specify the material on the print?
By callout where one exists: ASTM D2000 for rubber, ASTM F104 for fiber and PTFE sheet, ASTM D1056 for sponge, or the MIL, AMS or SAE document the design names. Otherwise name the material, the durometer and the thickness and describe the medium and temperature.
Can the gasket come with adhesive backing?
Yes. The sheet maker laminates a pressure-sensitive adhesive to one face, and the gasket is cut with the liner on. Say which face.
Sources
- [S1] Conquest Seal waterjet capability, Conquest Seal's own process figures, September 2026.
- [S2] ASTM F104-11(2020), Standard Classification System for Nonmetallic Gasket Materials, https://store.astm.org/f0104-11r20.html, accessed 2026-09-13.
- [S3] ASTM D1056-20, Standard Specification for Flexible Cellular Materials: Sponge or Expanded Rubber, https://store.astm.org/d1056-20.html, accessed 2026-09-13.
Parker is a trademark of Parker Hannifin Corporation; Viton is a trademark of The Chemours Company; PORON is a trademark of Rogers Corporation; Hypalon is a trademark of its owner; 3M is a trademark of 3M Company. No affiliation or endorsement is implied.
Related guides
Send the gasket drawing and the quantity
Upload a DXF, DWG or PDF with the quote request, name the sheet and thickness, say whether adhesive backing is wanted, and give the quantity. A photo of the part beside a ruler works if no drawing exists. Gaskets are cut in our own shop in Orange, California; a Conquest representative replies.
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