Rubber Diaphragms (Diaphragm Seals)

Custom Gasket Mfg. is a leading supplier of high-quality rubber diaphragms, also referred to as diaphragm seals.

Our company’s reputation for excellence has been built on our ability to provide our valued customers with the most effective manufacturing solutions to meet their most demanding applications. Our main objective is to continuously exceed our customer’s expectations by providing them with high-performance gaskets and sealing products, competitive pricing, on-time delivery and exceptional customer service. Custom Gasket Mfg. is committed to consistently meet all of your blueprint specifications and tolerance requirements.

Custom Gasket Mfg. specializes in precision molded rubber products, including fabric reinforced rubber diaphragms and homogenous (all rubber) diaphragms.

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Custom Rubber Diaphragms

Rubber Diaphragm Materials

By definition, rubber diaphragms are flexible seals that prevent unwanted transmission of substances between two places. These substances can be liquids, gasses or solutions. They are characteristically tough and dynamic and essential in many flow control applications. We provide full production capabilities from prototype and short run quantities through large production runs. Custom Gasket Mfg. takes pride in its ability to consistently produce precision custom rubber diaphragms guaranteed to meet your most stringent requirements and function perfectly within your application. The rubber molding tolerances for rubber diaphragms are complaint with rubber molding industry standard RMA A2 Precision tolerances.

Fabric Reinforced Rubber Diaphragms

Fabric Reinforced Rubber Diaphragms

Custom Gasket Mfg. provides a variety of custom molded fabric reinforced rubber diaphragms designed and engineered for specific industry applications, including pneumatic actuators, pumps and control valves. Our years of experience in the gasket manufacturing industry has proven that certain applications demand that a rubber elastomer layer must be very flexible and tough in order to withstand repeated flexing over a long lifetime. It is required that each and every custom molded rubber diaphragm be able to handle mandatory operating temperatures and also be resistant to any chemicals, fluids or gases it may come in contact with. The construction of fabric reinforced rubber diaphragms is achievable using special reinforcement materials including:

  • Polyester (Dacron)
  • Polyamide (Nylon, High Strength)
  • Cotton
  • High-Temp Polyamide (Nomex®)
  • Liquid Crystal
  • Polymer-Based fabrics (Vectran®)

Homogenous Rubber Diaphragms

Custom Gasket Mfg. provides diaphragms produced entirely of rubber. These homogeneous rubber diaphragms are used in very low-pressure applications when the strength of a fabric reinforced diaphragm is not required. Homogenous rubber diaphragms offer similar functional advantages as fabric reinforced diaphragms and tend to be more economical for our customers not requiring a sturdy construction.

Rubber Diaphragm Industry Applications

Rubber diaphragms and fabric reinforced rubber diaphragms are critical to the operation of equipment and systems in the industrial, automotive, aerospace, oil, gas, medical instrumentation, and pump and valve industries. If a dependable and accurate response to a hydraulic or pneumatic pressure change is needed then almost certainly a diaphragm seal is required. Custom Gasket Mfg. is experienced in engineering and manufacturing solutions for diaphragm applications including pumps, pneumatic diaphragm pumps, high pressure diaphragm pumps, diaphragm pressure gauges, diaphragm vacuum pumps, diaphragm air compressors, diaphragm fuel pumps, diaphragm metering pumps, actuators, pneumatic actuators, thermal actuators, wax actuators, and control valves.

Custom Gasket's Available Rubber Compounds

Diaphragm Seals

Custom Gasket Mfg. offers custom molded rubber diaphragms in a wide variety of rubber compounds and materials, including:

Please visit our gasket materials page for more information on our extensive selection of materials.

For more information on rubber diaphragms and fabric reinforced rubber diaphragms or to speak with one of our knowledgeable professionals, please feel free to Contact Us or complete our online Request For Quote form.

Call 800-985-6750 or email your inquiry to