Multi Layer Composite Valve Rubber Diaphragm EPDM PTFE Laminated Chemical Barrier Dual Hardness

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.

Hongum is specialized in research, production, sales, and distribution. It is located in the base of technology transfer of CAS, committed to research and development of new materials in both rubber and plastic industry.

Hongum supply various of rubber diaphragms, dampers and all kinds of other rubber and plastic hardwares for boat, yacht, wharf and sea farm industries, such as marine float, fast ray paddle, and other boat and wharf rubber and plastic accessories.

We have a full set of advanced production equipment from vulcanizing to final shipment, with international standards, using the same advanced production process, also have a full range of laboratory testing equipment, can conduct comprehensive experiments and test a variety of rubber and plastic material properties, also product performance tests. We have the most professional technical team which can integrate your idea and provide the best professional advice. With the most professional service and stable quality we have won the unanimous approval of the majority of domestic customers, and exported to Russia, the United States, Canada, Britain, India, Singapore and other international markets.

We always adhere to the "service-oriented, innovative, and provide customers with professional solutions" concept to create value, to achieve the cooperation successful and win together.

Our team has a number of person who love new material industry, full of passion, and the same mind. Our needs are derived from the public, we have the professional technical team for seal integration, we are your all-perspective communication consultant.