Products
Custom molded rubber parts
Custom molded rubber parts are the ones no catalog carries: made to your drawing, in your material, in your quantity. They reach you one of two ways. Either from the domestic molders Conquest Seal distributes for, or made to your print through our overseas manufacturing program and imported, with Conquest Seal as the manufacturer of record. Send the drawing, the material callout and the quantity and a Conquest representative quotes it.
- Sourcing
- domestic molders we distribute for, or made to your print overseas and imported
- Manufacturer of record
- the molder (domestic route); Conquest Seal (import route)
- Processes
- compression, transfer and injection molding
- Materials
- ASTM D2000 or SAE J200 callout, AMS or MIL document, or a named compound
- Hardness
- by compound; each compound's data sheet states its Shore A hardness
- Tooling
- built to your drawing, held for your part
- Documentation
- certificate of conformance; material certification and batch test report on request
Two ways to source a custom molded part
Conquest Seal supplies custom molded rubber parts made to your drawing, your material and your quantity, and does it two ways. On the domestic route the part is molded by one of the domestic molders Conquest Seal distributes for, and that molder is the manufacturer of record on the certificate. On the import route the part is made to your print through our overseas manufacturing program and imported, and Conquest Seal is the manufacturer of record. Tell us the application and the quote names the route.
| Domestic molders Conquest Seal distributes for | Made to your print through our overseas manufacturing program and imported | |
|---|---|---|
| Who molds the part | a domestic molder Conquest Seal distributes for | the overseas molder in the program, to your released print |
| Manufacturer of record | the molder, named on the certificate | Conquest Seal, named on the certificate |
| Tooling | built by the molder to your drawing; existing molds stay with the molder that holds them | built to your drawing under the program and held for your part |
| Material callout | ASTM D2000 or SAE J200 line callout, AMS or MIL document, or a named compound | the same callout governs; the certification names the compound supplied against it |
| Documentation | the molder's material certification and certificate of conformance, passed through | certificate of conformance from Conquest Seal as the manufacturer of record; material certification and batch test reports on request |
| Where it fits | a print or approved-source list that names a domestic molder, or a part whose mold already exists | production quantities to a released drawing where one manufacturer of record on the paperwork is wanted |
What to send
A quote needs the same six things on either route.
- The drawing, with dimensions, the parting-line position if it matters, and the surface finish.
- The material: an ASTM D2000 or SAE J200 line callout, an AMS or MIL document, or a named compound; the hardness and the color.
- The quantity per release and per year.
- Tolerances as the RMA (ARPM) class designations for molded rubber, A1 high precision through A4 basic, stated on the drawing where the fit needs it.
- Whether a mold already exists and who holds it.
- The documentation you need: certificate of conformance, material certification, or a batch test report.
Materials
Molded parts are quoted in the same compound families as the O-rings, and each family has its own page with its Parker® O-Ring Handbook service range: nitrile, FKM, EPDM, silicone, fluorosilicone, HNBR, FFKM, polyurethane and Aflas®. The callout on the drawing governs; a compound name alone is the weakest specification, since it belongs to one maker. Flat parts in a sheet material are cut, not molded: sheet gaskets are waterjet-cut in our own shop in Orange, California.
Orders are handled under Conquest Seal's AS9100D quality management system, whose certificate scope includes distribution. The certificate, CONQ-001, is on the certificate page, and what ships with each part is on the quality and certifications page.
Related pages
Viton is a trademark of The Chemours Company; Aflas is a trademark of AGC; Parker is a trademark of Parker Hannifin Corporation. Apple Rubber and Stockwell Elastomerics are named as the publishers of pages this page cites. No affiliation or endorsement is implied.
Sources
- Conquest Seal Corporation: distributor for domestic molders, and direct importer with Conquest Seal as the manufacturer of record
- ASTM D2000-18(2024)e1, the public scope in the ASTM store listing (materials designated by type, based on heat aging, and by class, based on oil swell), read 2026-09-25
- Processes, tooling and documentation rows: Conquest Seal's own supply records, read 2026-09-12
- RMA molded rubber tolerance designations A1 High Precision, A2 Precision, A3 Commercial and A4 Basic: Apple Rubber, Learning About Tolerances in Molded Rubber Parts (October 13, 2025), read 2026-09-28; the Association for Rubber Products Manufacturers (ARPM) A2 Precision and A3 Commercial designations: Stockwell Elastomerics, Manufacturing Tolerances: Molding, read 2026-09-28. Designations only, no figures reproduced
- Sheet gaskets waterjet-cut in Orange, California: Conquest Seal's own waterjet shop
Frequently asked
Where can I buy custom molded rubber parts?
From a distributor that sources them for you or from a molder directly. Conquest Seal does both: it distributes for domestic molders, and it imports parts made to your print through its overseas manufacturing program as the manufacturer of record. Send the drawing and the quantity and the quote names which route the part takes.
Do I need my own mold?
A molded part needs a mold, but you do not need to own one before you ask. On either route the tooling is built to your drawing and held for your part; if a mold already exists, say who holds it and the quote is written around it.
What is the difference between the domestic route and the import route?
Who molds the part and who signs as manufacturer of record. On the domestic route a molder Conquest Seal distributes for makes the part and its certification passes through. On the import route the part is made to your print through the overseas manufacturing program and imported, and Conquest Seal is the manufacturer of record on the certificate of conformance.
Who is the manufacturer of record on an imported part?
Conquest Seal. The certificate of conformance for a part made through the overseas manufacturing program names Conquest Seal as the manufacturer of record, and the material certification and any batch test report are supplied on request.
How should the print specify the rubber?
As an ASTM D2000 or SAE J200 line callout, because it names the material in one string: by type, based on heat aging, and by class, based on oil swell, with values for the additional requirements. Aerospace and defense parts usually cite an AMS document instead. A compound name alone belongs to one maker and is the weakest specification.
Should a flat part be molded or cut from sheet?
Cut it if it is flat. Sheet gaskets are waterjet-cut in our own shop, so a flat part in a sheet material needs no mold. Molding is the route when the cross section is not flat, when a metal insert is bonded in, or when the compound is not made as sheet. If the shape could go either way, send the drawing and both are quoted.
Related guides
Send the drawing, the callout and the quantity
The print, the ASTM D2000 callout or the compound, and the quantity. Molded parts are made to your drawing by the domestic molders Conquest Seal distributes for or through the overseas manufacturing program; a Conquest representative replies.
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