Classification and function of seals in hydraulic system

Leakage will result in the waste of working media, pollution of the machine and the environment, and even cause mechanical failure and equipment personal accident.

Leakage will cause a sharp drop in the volume efficiency of the hydraulic system, can not reach the required working pressure, and even can not work.

The tiny dust particles entering the system can cause or aggravate the wear of the friction pair of the hydraulic components, which further leads to leakage.

Therefore, seals and sealing device is an important part of hydraulic equipment. Its reliability and service life is an important index to measure the hydraulic system.

In the hydraulic system and its system, the sealing device is used to prevent the leakage of working medium and the invasion of foreign dust and foreign matter. One of the sealing components, that is, seals.

In addition to the gap seal, the seal is used, so that the gap between the two adjacent coupling surface control in the need to seal the liquid can pass through the minimum gap below.

In the contact seal, divided into self sealing and self sealing seal type (two).