How many rubber seals are in a car?
Automobiles contain a large number of rubber seals, which play a vital role in the overall vehicle structure and function. In addition to tires, rubber parts are mainly distributed in the following systems, sealing systems, suspension systems, transmission systems, brake systems, cooling systems, fuel systems, etc. The following is a detailed list of the main rubber seals and types of rubber used in automobiles.
Rubber seals in suspension systems
Rubber seals for suspension systems require high strength, abrasion resistance, and fatigue resistance, and the following materials are commonly used:
Suspension bushings: natural rubber (NR) and styrene-butadiene rubber (SBR), which have good elasticity and fatigue resistance.
Shock absorber rubber seat: Natural rubber (NR) is used because of its excellent elasticity and shock resistance.
Stabilizer bar rubber bushings: Natural rubber (NR) or nitrile rubber (NBR), which needs to be abrasion resistant and able to withstand high compression.
Swing arm bushing: neoprene (CR) or styrene-butadiene rubber (SBR), because of its strong wear resistance and aging resistance.
Spring gaskets: Made of nitrile rubber (NBR) or natural rubber (NR) to absorb impact and provide cushioning.
Vibration Isolation Blocks for Suspension Systems: Natural Rubber (NR) is preferred for good shock absorption and fatigue resistance.
Rubber seals in the drivetrain
Drivetrain rubber seals require resistance to oil, abrasion, and fatigue. Common materials include:
Propeller shaft boot: Neoprene (CR) or nitrile rubber (NBR) is used, which has excellent oil resistance and aging resistance.
Engine mount rubber pads: Natural rubber (NR) and neoprene (CR), which effectively absorb vibrations.
Transmission bracket rubber pads: Neoprene (CR) is mostly used because of its oil resistance, heat resistance, and aging resistance.
Clutch disc shock absorbing rubber block: Natural rubber (NR) or nitrile rubber (NBR) is used, which requires good oil resistance and shock absorption.
Transmission belt (belt): Neoprene (CR) or EPDM rubber is used to resist high temperatures and abrasion.
Rubber parts in the braking system
Rubber parts of the braking system need to have good sealing and high-temperature resistance, and the following materials are commonly used:
Brake master cylinder seals: Nitrile rubber (NBR) or fluoroelastomer (FKM) are used, which have excellent oil resistance and sealing.
Brake cylinder seals: nitrile rubber (NBR) or fluoroelastomer (FKM), high pressure and high-temperature resistance.
Brake hose: Mostly made of neoprene (CR), which can resist both oil and brake fluid.
Brake pedal rubber pad: Styrene-butadiene rubber (SBR) is used, which has good anti-slip performance.
Brake caliper boot: made of silicone rubber or neoprene (CR), which can withstand high temperatures.
Handbrake cable rubber sleeve: Neoprene (CR) is used for excellent abrasion resistance.
Rubber parts in the cooling system
Rubber parts in the cooling system need to be resistant to high temperatures and corrosion. The main materials include:
Water hose: EPDM rubber is the main material, which can resist high temperatures and chemical corrosion of coolant.
Radiator rubber pads: Natural rubber (NR) or neoprene (CR) are used, and the shock resistance is good.
Water pump seal: Fluoroelastomer (FKM) is used because of its high-temperature resistance and corrosion resistance.
Thermostat seals: Fluoroelastomer (FKM) or silicone rubber are mostly used, which have excellent chemical resistance and high-temperature resistance.
Rubber parts in the fuel system
Rubber parts of fuel systems need to be highly resistant to oil and corrosion. The main materials are:
Fuel hose: Nitrile rubber (NBR) or hydrogenated nitrile rubber (HNBR), extremely oil resistant.
Fuel Pump Seals: Fluoroelastomer (FKM) for best fuel resistance.
Fuel tank snorkel rubber sleeve: made of nitrile rubber (NBR), which can resist the corrosion of fuel vapor.
Fuel injector seal: fluoroelastomer (FKM), stable under high temperature and high-pressure conditions.
Rubber parts in the car
Rubber parts in the car need to be comfortable, non-slip, and wear-resistant. Common materials include:
Waterproof rubber mat under the carpet: natural rubber (NR) or styrene-butadiene rubber (SBR) is used, which has good waterproof performance.
Pedal rubber pads: Styrene-butadiene rubber (SBR), abrasion resistant and slip resistant.
Steering wheel anti-slip mat: mostly silicone rubber or styrene-butadiene rubber (SBR), soft and not easy to slide.
Seat Rail Rubber Pads: Natural rubber (NR) is used to provide good sliding damping.
Instrument panel anti-slip mat: mostly made of silicone rubber, soft and wear-resistant.
Exterior rubber parts
Exterior rubber parts need to be weather-resistant and abrasion-resistant, and commonly used materials include:
Wiper blade rubber: Natural rubber (NR) or neoprene (CR) is used, which is abrasion-resistant and flexible.
Anti-collision strip: made of neoprene (CR), impact resistant, and anti-aging.
Antenna base rubber pad: EPDM rubber is used, which is resistant to aging and ultraviolet rays
Lamp seals: mostly silicone rubber or EPDM rubber.
Fender rubber pads: Natural rubber (NR) or styrene-butadiene rubber (SBR) are used for abrasion resistance.
