Sealing diaphragm Omniseal® Diaphragms

diaphragm pumpPTFEfluoropolymer

About This Solution
Omniseal® diaphragms are engineered for long service life in demanding industrial environments. Manufactured in Virgin PTFE and Modified PTFE, they offer a balance of chemical compatibility and mechanical performance tailored to pump and valve applications.

Materials

• Virgin PTFE: suited for light to moderate dynamic and static duty; limited wear; heat resistance up to 200°C; low gas permeability; good cryogenic performance; suitable for moderate to hard vacuum; FDA-compliant grades available.
• Modified PTFE: improved mechanical behavior for light to moderate duty; retains low permeability and cryogenic properties; enhanced creep and extrusion resistance versus Virgin PTFE; FDA-compliant grades available.

Design & Manufacturing
Diaphragms are produced to customer hardware dimensions for straightforward assembly and integration. Valve diaphragms are injection-molded to final shape using precision tooling in a Class 10000 clean room. Pump diaphragms are thermoformed (TFM-based). Solutions are designed for both low- and high-pressure applications and are tailored to operating conditions and hardware dimensions.

Application Examples

• Industrial processing (pumps, valves)
• Life science equipment
• Semiconductor fabrication and vacuum pumps
• Nuclear science and research

Performance

• Temperature range: material/design dependent; typically approx. -240°C to +280°C (-400°F to +536°F)
• Pressure: up to 145 psi (10 bar) maximum for pump and valve diaphragms (application dependent)
• Speed: pump diaphragms suitable for high-frequency operation; valve diaphragms for low-speed opening/closing
• Dimensions: pump diaphragms typically Ø 50 mm — 400 mm; valve diaphragms nominal DN8 (1/4 in) — DN150 (6 in)
• Functional features: abrasion resistance, low friction and wear, low gas permeability, cryogenic compatibility, suitability for moderate to hard vacuum, options for FDA/USP compliance

Technical Specifications

• Brand: Omniseal®
• Materials: Virgin PTFE; Modified PTFE (fluoropolymer family)
• Temperature range: approx. -240°C to +280°C (material/design dependent)
• Maximum pressure: 145 psi (10 bar) (application dependent)
• Pump diaphragm diameters: typically 50 mm — 400 mm
• Valve diaphragm nominal sizes: DN8 (1/4 in) — DN150 (6 in)
• Valve diaphragms: injection-molded in Class 10000 clean room with precision tooling and lot traceability
• Pump diaphragms: thermoformed (TFM) for abrasion resistance, low friction and high-frequency operation
• Regulatory: some grades available with FDA or USP-class compliance
• Modified PTFE benefits: improved creep and extrusion resistance versus Virgin PTFE while retaining low permeability and cryogenic properties