Viton® / FKM Diaphragms.

Cannon Gasket has the Capability to produce high strength, tear resistant diaphragms for your most critical and demanding applications. Diaphragms are commonly used in high pressure applications where the material must be flexible yet durable enough to withstand repeated flexing over a long period of time. Materials are integrated with reinforcing fabrics to improve application performance and durability, along with Capabilities to maintain responsiveness to variations in pressure. Common Diaphragm Fabrics include; Nylon, Dacron® / Polyester, Nomex®, Kevlar®, Fiberglass, Silk and Cotton. Viton (FKM) fluoroelastomer is the diaphragm material of choice when the flexing element must contact aggressive chemicals at elevated temperature. Cannon Gasket die-cuts Viton diaphragms, plain or fabric-reinforced, for AODD chemical-transfer pumps, control valves, and high-purity biopharma and semiconductor fluid paths.

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Viton® / FKM diaphragms, die-cut close-up
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Properties of Viton® / FKM diaphragms

Cannon Gasket cuts Viton® / FKM diaphragms to your exact specifications. Viton / FKM exhibits resistance to petroleum fuels, oils, acids, aromatics, chlorinated solvents, and hydraulic fluids.

Viton® / FKM tolerances and customization

Standard dimensional tolerances on Viton® / FKM diaphragms land around ±0.010" to ±0.015" on OD and ID, depending on material thickness and profile. Tighter tolerances are available on selected grades. Cannon Gasket cuts Viton® / FKM to custom profiles in-house and matches lead times to your production volume. PSA backing, pad printing, custom packaging, and kitting are all on the menu when you need them.

How Viton / FKM Performs

As the working membrane in a pump or valve, an FKM diaphragm withstands fuels, acids, aromatics, and solvents that swell or degrade other elastomers, while holding its flex life through repeated stroking. Durometer, convolution geometry, and cycle-life target are matched so the membrane seals reliably across the service temperature range.

Where Viton / FKM Diaphragms Are Specified

- AODD chemical-transfer pump diaphragms - Control valve diaphragms for aggressive media - Chemical metering and dosing pump diaphragms - Pressure regulator sensing diaphragms for fuels and solvents - Biopharma and semiconductor fluid-path diaphragms - Actuator diaphragms in high-temperature service

Manufacturing Methods

Die-Cut and Flash Cutting available

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Key Properties
  • Aggressive chemical resistance
  • Fuel, acid, and solvent resistant
Engineering Tools
Applications
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Frequently Asked Questions

Common Viton® / FKM diaphragm questions.

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.
Do you supply fabric-reinforced diaphragms?
Yes. Nylon or polyester fabric embedded in the elastomer adds tensile strength for high-pressure service. Common for hydraulic and pneumatic actuator applications above 100 psi.
What applications use custom diaphragms?
Diaphragm pumps, pressure regulators, pneumatic actuators, control valves, medical devices (ventilators, dialysis, infusion pumps), and pneumatic logic controls. We cut the diaphragm blank to your drawing in any of the stocked compounds.
Which materials are used for custom diaphragms?
Silicone for wide temperature and FDA grades, EPDM for weather and steam, Nitrile / Buna-N for fuel and oil pumps, Viton for aggressive chemicals, Fluorosilicone for aerospace fuel systems, and fabric-reinforced rubber for high-pressure applications.
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 Viton® / FKM diaphragms?
From prototype to production, any size, any volume.
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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