Description of the role and meaning of the seal

In hydraulic systems and systems, seals are used to prevent leakage of working media and ingress of foreign dust and foreign matter. The element that acts as a seal, ie the seal.
Leakage can cause waste of working media, pollute the machine and the environment, and even cause mechanical failure and equipment accidents.
The internal leakage causes a drastic drop in the volumetric efficiency of the hydraulic system, which does not reach the required working pressure, and even does not work.
Intrusion of tiny dust particles in the system can cause or exacerbate the wear of the friction elements of the hydraulic components, further causing leakage.
Therefore, seals and seals are an important part of hydraulic equipment. The reliability and service life of its work is an important indicator of the quality of the hydraulic system.
In addition to the gap seal, the seal is used to control the gap between the adjacent two coupling surfaces below the minimum gap through which the liquid requiring sealing can pass.