Omniseal® Diaphragms

Pump Diaphragms

With 45 years of experience with injection molding diaphragms and PTFE pump components, we have earned the trust of many top OEM for Air Operated Diaphragm (AOD) pump manufacturers. These critical parts are abrasion resistant, offer low friction and wear, and are compatible with a broad range of chemicals in operating temperatures ranging from -240°C to +280°C (-400°F to +536°F). Pump diaphragms can be designed according to working conditions and hardware dimensions in order to reach maximum performance, ensuring long life time performance that precisely matches customer requirements.

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Most businesses rely on AOD pumps as they are used as general workhorse devices in transfer applications and in a wide range of industries to handle different materials such as chemicals, crude oil, mining, food, beverage, paints and many more. These pumps use reciprocating diaphragms to pump fluid. Since AOD pumps are essentially leak-free, having only stationary seals between the wetted parts and outside environment, leakage can only occur if the diaphragms fail. Our diaphragm solutions provide a high cycle life due to its PTFE material, lasting longer than diaphragms made from other materials such as elastomers.

Standard Specifications

PTFE or TFM material for overlays (side facing media), and rubber or thermoplastic elastomers for backers 

Used in

air operated pumps


from -240°C to +280°C

(-400°F to +536°F)

temperature is dependent of materials selected in the design phase of the diaphragm

Max Speed

High speed / high frequency


Backers thickness: 1.2 mm to 3.8 mm
Overlays thickness: 0.7 mm to 3.04 mm
Total thickness: 2.5 mm to 6.35 mm



Testing & Validation

Testing and validation of solution performance are included in global development process.



Solution can be supplied as two separate elements or as one piece.

Industry Case Studies

Take a closer look at case studies that detail this diaphragm's high performance.

Omniseal Solutions can help you with your project


A team of expert designers


Customized solutions & materials to suit your projects

Extreme Applications

Expert of precision seals

Omniseal Solutions can help you with your project