Natural Rubber Diaphragms.

Natural rubber (NR) delivers the highest resilience and tear strength of any common elastomer, well suited to diaphragms that flex through millions of cycles. Cannon Gasket die-cuts natural rubber pump and actuator diaphragms in soft to medium durometers, with a latex-free polyisoprene grade available for biocompatibility concerns.

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Latex-free grade available
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Natural Rubber diaphragms, die-cut close-up
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Properties of Natural Rubber diaphragms

Cannon Gasket cuts Natural Rubber diaphragms to your exact specifications. Natural rubber exhibits resistance to water, dilute acids, alcohols, and many organic chemicals, with outstanding resilience and abrasion resistance.

Natural Rubber tolerances and customization

Standard dimensional tolerances on Natural Rubber 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 Natural Rubber 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 Natural Rubber Performs

As the working element in a pump or actuator, a natural rubber diaphragm recovers its shape after each stroke with very low energy loss, giving it the longest flex life and excellent fatigue resistance under repeated dynamic loading. Durometers are selected for stroke, pressure, and cycle target.

Where Natural Rubber Diaphragms Are Specified

- Diaphragm pump elements - Pneumatic and hydraulic actuators - Pressure regulator diaphragms - Metering and dosing pump diaphragms - Irrigation and water control valves - Vibration-isolating flexing diaphragms

Where Another Material May Fit Better

Natural rubber is not recommended for petroleum oils, fuels, or prolonged ozone and UV exposure.

Manufacturing Methods

Cannon Gasket die-cuts natural rubber diaphragms with custom convolutions and geometry, in-house, with fabric reinforcement available, from prototype through production, under ISO 9001 certification.

Request a QuoteNatural Rubber Diaphragms
Key Properties
  • Highest resilience
  • High tear strength
  • Longest flex life
  • Latex-free grade available
Engineering Tools
Applications
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Frequently Asked Questions

Common Natural Rubber 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 Natural Rubber 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