BRAKING SYSTEM

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Superconductive electromagnetic shielding sealing strip

Vacuum Booster Diaphragm

This product is a core precision component of the vacuum brake booster system. It is manufactured by molding high-performance elastomer materials (such as rubber, silicone, or composite materials) together with a high-strength fabric reinforcement. It features excellent sealing properties, resistance to extreme temperatures, and outstanding fatigue resistance. By leveraging the pressure difference between vacuum and atmospheric pressure, it enables accurate force transmission and amplification, ensuring responsive, stable, and reliable braking system performance. Widely used in automobiles, industrial machinery, and various pneumatic control applications.

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Product Features

1. Made of high-performance elastomer (NBR, EPDM, silicone, or composite) with fabric reinforcement for enhanced strength

2. Excellent airtightness and low permeability to maintain stable vacuum differential pressure

3. Wide temperature resistance range (typically -40°C to +120°C or higher depending on material)

4. High fatigue and tear resistance for long service life under cyclic loading

5. Precision molding ensures consistent thickness and uniform force transmission

Application

● Automotive brake vacuum booster systems (passenger cars, commercial vehicles, heavy trucks)

● Industrial pneumatic actuation and control systems

● Agricultural and construction machinery braking systems

Advantages

1. Enhanced braking safety
Reliable force amplification ensures shorter stopping distances

2. Durable performance
Resists cracking, aging, and deformation under millions of working cycles

3. Low maintenance
Sealing integrity reduces vacuum leakage and system failure risks

Manufacturing Standards

FAQ

1.What materials are available for vacuum booster diaphragms?

Common materials include NBR (oil-resistant), EPDM (brake fluid and weather-resistant), silicone (high/low temperature), and composite reinforced fabrics for high-strength applications.
2. How do I know if my diaphragm needs replacement?

Signs include hard brake pedal feel, increased stopping distance, hissing noise from booster area, or visible cracking / perforation during inspection.
3. Can you produce custom sizes?

Yes. We support custom diameters, thicknesses, shore hardness, and fabric reinforcement layers based on your booster design drawings or samples.
4. What is the typical service life?

Under normal operating conditions, a high-quality diaphragm can last 500,000 to 1,000,000 brake cycles or 5–10 years, depending on material and usage environment.

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