Plastic Gasket Materials.

Engineered thermoplastics like PTFE, UHMW, and nylon die-cut to drawing for chemical resistance, dielectric isolation, and dimensional stability where elastomer compression is not wanted.

Quick facts about Plastic Gasket Materials
  • Engineered thermoplastics cut to drawing for chemical resistance, dielectric isolation, and dimensional stability
  • Ten standard plastic grades plus PEEK, FEP, and film stocks on request
  • The rigid alternative where elastomer compression is not wanted
  • ISO 9001 die-cutting since 1971, prototype to production volume
Materials
10 grades
Tooling
In-house dies
Certified
ISO 9001
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Plastic Gasket Materials gaskets, die-cut close-up
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Plastic Gasket Materials

The rigid alternative to elastomer gaskets.

Plastic gaskets are die-cut from rigid and semi-rigid engineered thermoplastics rather than compressible elastomers. They are specified when a seal or spacer needs to resist aggressive chemicals, isolate electrical current, slide with low friction, or hold tight dimensions under load without the creep and compression set that come with rubber. Stocks range from low-friction PTFE and UHMW to structural Delrin and polycarbonate, plus thin polyester and polyimide films for insulation and shimming. Each grade brings a distinct mix of chemical, thermal, dielectric, and mechanical properties, so material selection follows the application rather than the other way around.

Cannon Gasket die-cuts every plastic grade to your drawing, holding tight tolerances on critical dimensions with precision stamping and kiss cutting. We add PSA lamination, part marking, and packaging as needed, and we run prototype quantities through full production orders from our Fontana, California plant. If you are weighing grades for a specific seal, insulator, or wear surface, see our guide to the best plastic gaskets for application-by-application detail, then send a drawing for a quote.

Materials

Engineered plastic gasket grades.

Ten standard thermoplastic and composite grades, each cut to drawing, with PEEK, FEP, and other films available on request.

PTFE / Teflon®
Near-universal chemical resistance and the lowest friction of any plastic, ideal for corrosive flange seals, valve seats, and chemical-line gaskets.
UHMW
Extreme abrasion resistance and a self-lubricating surface, used for wear pads, slide gaskets, and low-friction sealing in abrasive service.
Nylon
Tough, wear-resistant, and dimensionally strong, used for structural gaskets, insulating washers, and bearing-grade spacers (Nylon 6 and Nylon 6/6).
Delrin® / Acetal
High stiffness, low moisture absorption, and excellent dimensional stability for precision spacers, insulators, and tight-tolerance machined-style gaskets.
Polycarbonate / Lexan®
High impact strength with optical clarity and good dielectric properties, used for sight gaskets, insulating barriers, and rigid protective spacers.
Mylar® (polyester)
Thin, strong polyester film with strong dielectric strength, die-cut for electrical insulation, shims, and thin barrier gaskets.
Kapton® (polyimide)
Polyimide film that holds its properties from cryogenic to high heat, used for high-temperature electrical insulation and thin thermal-barrier gaskets.
Polypropylene
Broad chemical and acid resistance with good fatigue life, used for chemical-tank gaskets, plumbing seals, and corrosion-resistant spacers.
PVC
Economical chemical and weather resistance with good dielectric strength, used for general-purpose insulating and corrosion-resistant gaskets.
Phenolic
Rigid resin-bonded composite with high strength and heat resistance, used for structural insulating gaskets, spacers, and electrical barrier plates.
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Frequently Asked Questions

Common questions about custom gaskets.

Are you ISO 9001 certified?
Yes, ISO 9001:2015 certified. Documented quality management covers incoming material verification, in-process inspection, calibrated measurement, final inspection, non-conformance handling, corrective action, and full lot traceability. AS9100-ready for aerospace, with MIL-spec and FDA 21 CFR 177.2600 / USP Class VI grades available on request.
Can you cut custom gasket profiles?
Yes. Custom steel-rule and rotary tooling is built in-house from your drawing or DXF. Complex profiles, multiple through-cuts, tight bolt patterns, and irregular perimeters are all standard work.
Can you supply PSA-backed gaskets?
Yes. Pressure-sensitive adhesive backing is a standard option on most rubber and fiber gasketing, with either permanent or removable liners. Kiss-cut on liner and through-cut both supported on flatbed and rotary presses.
What tolerances can you hold on gasket dimensions?
Standard die-cut tolerance is ±0.010 to ±0.015 inch on OD and ID, depending on material durometer and thickness. Tighter tolerances are available on select grades and thicknesses. Ask if your drawing specifies something tighter and we will confirm feasibility during the quote.
Which gasket material is right for my application?
Start with temperature range, fluid contact, and regulatory requirements. Buna-N is the default for oil and fuel. EPDM for weather, water, and steam. Silicone for extreme temperature and FDA grades. Viton for aggressive chemicals. Our gasket material selection guide walks through the decision framework.
How fast do you return a quote?
Most RFQs come back within one business day. Simple profile updates to an existing tool quote same-day. Send a drawing, DXF, or competing part number and our engineering team reviews material, tolerance, and volume before pricing.
What is the minimum order quantity?
Minimums depend on the part and material. We cut prototype and first-article quantities for engineering evaluation, then scale up to production volumes from the same tooling. For high-volume programs we run JIT, VMI, and Kanban replenishment out of Fontana, California.
What should I send with an RFQ?
Ideal: a drawing or DXF, material spec (or compound family), estimated annual volume, and any regulatory callouts (FDA, USP Class VI, AS9100, MIL-spec). If you only have a sample or a part number from a competing supplier, send that and we will reverse-engineer the spec before quoting.
What are typical lead times?
Prototype and first-article parts usually ship in 5-10 business days. Production runs from existing tooling are 2-3 weeks depending on volume and material lead time. Rush and expedite options available on a case-by-case basis.
Need custom plastic gasket materials?
Send your drawing or material spec. We quote pricing, tooling, and lead time within one business day.
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ISO 9001 CertifiedAS9100-ReadyMIL-Spec CompatibleFDA / USP Class VIEst. 1971ISO 9001 CertifiedAS9100-ReadyMIL-Spec CompatibleFDA / USP Class VIEst. 1971ISO 9001 CertifiedAS9100-ReadyMIL-Spec CompatibleFDA / USP Class VIEst. 1971ISO 9001 CertifiedAS9100-ReadyMIL-Spec CompatibleFDA / USP Class VIEst. 1971