Definition, function and technical characteristics of shock absorber oil seal

The Shock Absorber Oil Seal is a key component in automotive shock absorbers. It is used to seal the hydraulic oil inside the shock absorber to prevent the leakage of hydraulic oil and the intrusion of external dust and water. Shock absorber oil seal plays a vital role in ensuring the normal operation of shock absorber and prolonging the service life of shock absorber. This paper will discuss the definition, function and technical characteristics of shock absorber oil seal in detail.

Definition of shock absorber oil seal

The shock absorber oil seal is a seal that is mounted on the piston rod of the shock absorber and is usually made of rubber or polymer material. It is tightly fitted to the surface of the piston rod to form a sealing ring to prevent the leakage of hydraulic oil from inside the shock absorber, while blocking external dust, moisture and other impurities into the shock absorber inside.

Function of shock absorber oil seal

Seal hydraulic oil: The main function of the shock absorber oil seal is to seal the hydraulic oil inside the shock absorber to prevent the leakage of hydraulic oil. The leakage of hydraulic oil will cause the performance of the shock absorber to decline, affecting the ride stability and comfort of the vehicle.

Prevent the intrusion of impurities: the oil seal can effectively prevent the external dust, water and other impurities into the shock absorber. These impurities may cause wear and corrosion of the internal components of the shock absorber and shorten the service life of the shock absorber.

Maintain shock absorber performance: The good sealing performance of the oil seal can maintain the stability of the hydraulic oil inside the shock absorber, ensuring that the shock absorber can provide stable shock absorption effect under various working conditions.

Extended service life: Quality shock absorber oil seals reduce friction and wear inside the shock absorber and extend the service life of the shock absorber.

Technical characteristics of shock absorber oil seal

Wear resistance: Shock absorber oil seals need to work under high pressure and frequent movement, so they must have good wear resistance. Common materials include nitrile butadiene rubber (NBR), fluorine rubber (FKM) and so on.

Oil resistance: The oil seal material needs to withstand the chemical properties of the hydraulic oil inside the shock absorber to prevent the hydraulic oil from damaging it. The oil resistant material ensures the long-term stability of the oil seal.

High temperature resistance: the shock absorber will produce a high temperature in the work, and the oil seal material needs to have good high temperature resistance to prevent the aging and deformation of the material caused by high temperature.

Elasticity and sealing: The oil seal needs to have good elasticity and sealing performance to ensure that it can be tightly fitted to the piston rod under various working conditions to form an effective seal.

Fatigue resistance: the oil seal will be subjected to repeated compression and tension during the work of the shock absorber, so it needs to have good fatigue resistance to prevent seal failure caused by fatigue.

Typical structure of shock absorber oil seal

Lip Seal: Lip seal is the most common shock absorber oil seal structure. It consists of a main lip and a secondary lip, and the main lip is in close contact with the piston rod to provide the main sealing performance; The secondary lip provides additional sealing and dust protection.

Combination oil seal: Combination oil seal consists of two or more separate oil seals combined, usually including a static seal and a dynamic seal. The static seal is mainly used for the sealing of the fixed position, and the dynamic seal is used for the motion seal of the piston rod.

Metal frame oil seal: The metal frame oil seal is embedded with a metal frame inside the rubber section to provide additional strength and support, ensuring the stability of the oil seal in high-pressure and high-temperature environments.

Design and manufacture of shock absorber oil seal

Material selection: Select the right rubber or polymer material for the application and optimize its physical and chemical properties.

Structural design: Through reasonable structural design, to ensure that the oil seal in high pressure, high temperature and harsh environment to maintain stability and wear resistance.

Manufacturing process: The use of advanced manufacturing processes, such as precision molding, heat treatment and surface treatment, to ensure the dimensional accuracy and performance stability of the oil seal.

conclusion

Shock absorber oil seal is widely used in the field of automobile shock absorber because of its excellent sealing performance and wear resistance. With the continuous progress of material science and manufacturing technology, the application of shock absorber oil seals in the field of sealing and dust prevention will be more extensive and in-depth, providing more reliable and efficient shock absorption solutions for the automotive industry.

Through the above technical analysis, it can be seen that the application of shock absorber oil seal in the field of automotive shock absorber not only has technical advantages, but also has significant economic and social benefits. In the future, the application prospect of shock absorber oil seal in the field of automotive shock absorber will be broader.

FOREVER SEALS! Seals manufacturer, accept custom seals, from design to research and development, from production to testing, a full range of services. For more information, please contact FOREVER SEALS directly. FOREVER SEALS product experts are here to help you! Whatsapp: +86-18098184099；WeChat: +86-13049188460；  E-mail: sales@foreverseals.com.