Rubber Diaphragm Material

Parameter	Specification
Material Structure	Fabric-Reinforced Rubber Composite
Available Rubber Materials	NBR, Chloroprene Rubber, Silicone Rubber, FKM
Operating Temperature Range	-40°C to +200°C (depending on material)
Surface Requirements	Smooth and flat, uniform thickness
Application Systems	Vacuum booster, EGR valve, turbo wastegate, etc.
Inspection Requirement	100% Factory Inspection

Rubber Diaphragm Material is a flexible component used in automotive vacuum and pneumatic systems for pressure isolation and motion transmission. It is used in vacuum boosters (brake boosters), EGR valves, turbocharger wastegate actuators, and evaporative emission control systems. The diaphragm deforms as air pressure changes inside the chamber. It converts pressure signals into mechanical displacement for precise system control. This material determines whether brake assist is "responsive," whether EGR opens and closes "accurately," and whether turbo boost pressure is "stable and controllable." In simple terms, it makes braking "light and effective," and engine emissions "compliant."

Anhui Denaifu has over 20 years of professional experience in rubber diaphragm manufacturing. Our 127,000+ square meter facility employs over 80 people. Our Rubber Diaphragm Material covers 80% of vehicle brands in China through tier-1 suppliers.

Our Rubber Diaphragm Material uses high-strength polyester fabric-reinforced rubber composite. It combines flexibility, strength, and fatigue life. The surface is smooth and flat with uniform thickness. No cracks or permanent deformation occur under repeated deformation. Material selection is based on system media and operating temperature. Common materials include NBR, chloroprene rubber, silicone rubber, and FKM.

We have an independent R&D team and dedicated quality staff. Our production and testing equipment is comprehensive. Monthly capacity exceeds 4 million pieces. Every batch is 100% inspected before shipping. We hold IATF16949, ISO14001, and 14 utility model patents.

Anhui Denaifu supports custom development based on customer drawings or samples. Standard product delivery takes 30 working days. Custom products take 60 to 90 working days. The minimum order is RMB 50,000.

Standard product payment: 70% prepayment starts production, 20% when goods reach the port, and 10% as quality guarantee, payable within 30 days after receipt. If goods are damaged in transit, we replace them at no cost.

Pre-sales: we handle solution design and product review. In-sales: we control quality and monitor capacity. After-sales: we provide technical and quality coordination. Warranty terms follow customer operating environment requirements.

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