Automotive oil seals

Automotive Oil seals are a key component widely used in the automotive sector, playing an important role in key locations such as the engine, transmission system and suspension system of the vehicle.

Definition

An oil seal, also known as a seal or seal, is a device used to prevent the leakage of liquids or gases. In the automotive sector, oil seals are primarily used to enclose lubricating oil, coolant and other fluids in engines and drivetrains, and to prevent dust, impurities and moisture from entering critical components to ensure proper operation.

The function of the automotive oil seals

Sealing function

The main function of automotive oil seals is to maintain the tightness of liquids and gases, ensure that lubricating oil does not leak, and prevent dust and impurities from entering key parts to avoid damage to parts such as engines, transmission systems and suspension systems.

Anti-friction function

Automotive oil seals can reduce the friction between parts, ensure the normal operation of parts, and extend the service life of parts.

Guiding function

Automotive oil seals can also play a guiding role to ensure the accuracy and stability of axial movement and improve the driving smoothness of the car.

Structure

Automotive oil seals usually consist of housings, sealing lips, and springs, among others.

Shell

The shell is the main part of the oil seal, usually made of metal or rubber, with sufficient strength and rigidity to maintain the shape and stability of the oil seal.

Sealing lip

The automotive sealing lip is a key part of the oil seal, which directly contacts the liquid or gas and plays a sealing role. The sealing lip is usually made of elastic materials such as rubber or polyurethane, which has good sealing performance and wear resistance.

Spring

The spring is usually located inside the sealing lip to increase the contact force between the sealing lip and the shaft and maintain the tightness. Springs are usually made of steel, which has a certain elasticity and corrosion resistance.

Material

The material selection of automotive oil seals is very important, which directly affects its sealing performance and service life. Common oil seal materials include the following categories:

Rubber

Rubber is one of the most commonly used oil seal materials and has good elasticity and wear resistance. Common rubber materials are nitrile rubber (NBR), fluoroelastomer (FKM) and acrylic rubber (ACM).

Polyurethane

Polyurethane has good oil resistance and abrasion resistance, suitable for high temperature and high pressure environments. Polyurethane oil seals are typically used in environments where operating conditions are harsh, such as engines and drivetrains.

Metals

Metal oil seals are mainly made of metal, which has high strength and corrosion resistance, and is suitable for high temperature and high speed environments.

Apply

Oil seals have a wide range of applications in the automotive field, and common applications include the following:

Engine system

The automotive oil seals plays the role of sealing lubricating oil and coolant in the engine, preventing liquid leakage and dust from entering, and ensuring the normal operation of the engine. Common engine oil seals include crankshaft front oil seals, crankshaft rear oil seals and camshaft oil seals.

Drivetrain

The automotive oil seals plays the role of sealing lubricating oil and protecting impurities in the transmission system to ensure the normal operation of the transmission system. Common transmission system oil seals include propeller shaft oil seals, differential oil seals and transmission oil seals.

Suspension system

The automobile oil seals plays the role of sealing the oil seal liquid and protecting impurities in the suspension system to ensure the normal operation of the suspension system. Common suspension system oil seals include suspension bracket oil seals and suspension piston oil seals.

Bearing system

Automotive oil seals play the role of sealing lubricating oil and protecting impurities in the bearing system to ensure the normal lubrication and work of the bearing. Common bearing system oil seals include bearing end cover oil seals and bearing box oil seals.

Braking system

The automobile oil seals plays the role of sealing brake fluid and protecting impurities in the brake system to ensure the normal operation of the brake system. Common brake system oil seals include brake pump oil seals and brake cylinder oil seals.