Silicone 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. Silicone is the default diaphragm material wherever cleanliness, and a wide service temperature matter. Cannon Gasket cuts silicone diaphragms in plain or fabric-reinforced, for pump, valve, regulator, and actuator builders who need a contamination-free flexing seal. Common Diaphragm Fabrics include; Nylon, Dacron® / Polyester, Nomex®, Kevlar®, Fiberglass, Silk and Cotton.

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Silicone diaphragms, die-cut close-up
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Properties of Silicone diaphragms

Cannon Gasket cuts Silicone diaphragms to your exact specifications. Silicone exhibits resistance to ozone, UV, and weathering, with FDA 21 CFR 177.2600 and USP Class VI grades available. Poor resistance to petroleum oils and fuels, so nitrile or fluorosilicone is preferred for hydrocarbon-wetted diaphragms.

Silicone tolerances and customization

Standard dimensional tolerances on Silicone 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 Silicone 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 Silicone Performs

As a flexing element, silicone holds its shape and sealing force from extreme cold to high heat, and its excellent flex life lets a silicone diaphragm cycle for millions of strokes without taking a set or cracking. Plain or fabric-reinforced constructions are available to match your pressure range and stroke.

Where Silicone Diaphragms Are Specified

- Medical device diaphragms for ventilators, dialysis, and infusion pumps - Diaphragm pumps for clean and sterile fluids - Control valve diaphragms for biopharma and high-purity fluid paths - Pressure regulator sensing diaphragms - Pneumatic control and air-logic diaphragms - Food, beverage, and dairy processing diaphragms

Manufacturing Methods

Die-Cut or Flash Cutting available

Request a QuoteSilicone Diaphragms
Key Properties
  • Excellent flex life
  • FDA
  • Common Diaphragm Fabrics include; Nylon, Dacron® / Polyester, Nomex®, Kevlar®, Fiberglass, Silk and Cotton.
Engineering Tools
Applications
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Materials and fabrication capabilities behind every custom part we cut.
Frequently Asked Questions

Common Silicone 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 Silicone 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