Wear Resistant PTFE Rubber Diaphragm
Pure PTFE diaphragms offer good chemical resistance but suffer from high hardness, poor elasticity, and "cold flow" (deformation under pressure leading to seal failure).
Pure rubber diaphragms provide excellent elasticity but have limited temperature and chemical resistance.
Our solution uses a heat-cured compression molding process to bond both materials tightly:
| Layer | Material | Function |
|---|---|---|
| Wetted side (Top) | PTFE | Direct contact with aggressive chemicals. Resists almost all acids, alkalis, and solvents. |
| Drive side (Backing) | EPDM / NBR / FKM | Provides resilience and recovery force. Ensures high spring-back and dimensional stability during reciprocating motion. |
Wear Resistant PTFE Rubber Diaphragm
Key Performance Advantages
Exceptional Durability: The PTFE (Polytetrafluoroethylene) coating effectively prevents abrasion, tearing, and aging, thereby extending the service life of pumps or valves.
Chemical Inertness: Exhibits robust resistance to the vast majority of solvents, acids, and bases, ensuring that the conveyed fluid does not undergo chemical reactions with the diaphragm.
Low-Friction Properties: Minimizes sticking, reduces wear, and ensures that the diaphragm material remains structurally intact during smooth, continuous flexing movements.
Thermal Stability: Possesses excellent resistance to extreme temperatures, performing reliably in both high-temperature process environments and low-temperature operating conditions.
Wear Resistant PTFE Rubber Diaphragm
1.Excellent Wear & Puncture Resistance
High-strength PTFE resin is used as the top layer. Compared to standard PTFE, our formulation offers significantly improved abrasion resistance against particulate-laden fluids.
High tensile strength (≥30 MPa) and elongation (≥300%) prevent puncture under high-pressure spikes.
2.Extended Cycle Life
Advanced molding process ensures tight layer adhesion without bubbles or delamination.
Optimized rib/reinforcement design reduces stress concentration and minimizes the "cold flow" deformation common in pure PTFE diaphragms under cyclic pressure.
Flex life significantly exceeds industry standards.
Wear Resistant PTFE Rubber Diaphragm
We are a source factory specializing in high-performance sealing and fluid control components, providing OEM/ODM services to pump and valve manufacturers worldwide. Our flagship product - the Wear-Resistant PTFE/EPDM Composite Diaphragm - is engineered for severe corrosion, high abrasion, and high-cycle reciprocating applications.
This diaphragm features a dual-layer composite structure: a PTFE (Teflon) wetted layer bonded to an elastic rubber backing layer (EPDM, NBR, or FKM) . This design combines PTFE's superior chemical resistance and low friction coefficient with rubber's excellent elasticity and flex life. It is the ideal sealing and control element for air-operated double-diaphragm (AODD) pumps, metering pumps, and control valves.
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