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Linda.MSince collaborating with Hongum in 2020, their marine-grade rubber diaphragms and industrial shock absorbers have delivered zero-failure performance, ensuring uninterrupted operations for our port cranes, dredger propulsion systems, and LNG carrier equipment.
Multi Layer Composite Valve Rubber Diaphragm EPDM PTFE Laminated Chemical Barrier Dual Hardness
| Place of Origin | Guangdong, China |
|---|---|
| Brand Name | WNRLN |
| Certification | ISO 9001:2015 |
| Model Number | VRD-COMP-PTFE |
| Minimum Order Quantity | 30 Pieces |
| Price | USD 6.00-30.00 / Piece |
| Packaging Details | Individual sealed polybag with desiccant, protective tray, export-grade carton |
| Delivery Time | 10-15 days for stock, 25-30 days for production |
| Payment Terms | T/T, L/C, PayPal, Western Union |
| Supply Ability | 20000 Pieces per Month |
| Construction | EPDM Base + PTFE Lamination | Hardness | 55A Seal / 80A Mount |
|---|---|---|---|
| Temperature Range | -20C To +130C | Flex Life | >1,000,000 Cycles |
| Permeability | Ultra-low Gas | Chemical Barrier | PTFE Layer |
| Highlight | EPDM PTFE laminated rubber diaphragm,Multi layer composite valve diaphragm,Chemical barrier dual hardness diaphragm |
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Multi-Layer Composite Valve Rubber Diaphragm
Advanced multi-layer composite diaphragm featuring an EPDM base layer with PTFE lamination for superior chemical barrier properties. The dual-hardness design combines a flexible sealing zone with a rigid mounting area for optimal performance.
Key Features
- Construction: EPDM base + PTFE chemical barrier layer
- Dual Hardness: Soft sealing zone (55A) + rigid mounting zone (80A)
- Chemical Resistance: PTFE layer provides universal chemical compatibility on wetted side
- Temperature Range: -20°C to +130°C
- Flex Life: >1 million cycles with PTFE lamination
- Permeability: Ultra-low gas permeability for vacuum service
- Customization: Layer materials configurable per application
Applications
Chemical processing valves requiring universal chemical resistance, vacuum systems, high-purity gas handling, corrosive fluid control, and pharmaceutical processing.
Quality Assurance
Each diaphragm undergoes layer adhesion testing and dimensional inspection. ISO 9001:2015 certified manufacturing with full traceability.

