Seal of function and meaning

Leakage causes of working medium waste, pollution machine and environment, and even cause mechanical operation failure and equipment accidents.

Leakage causes hydraulic system capacity efficiency sharply, reach the required work pressure, can't even.

The small dust particles into system, can cause or hydraulic components of the friction pair, and further to wear.

Therefore, the seals and sealing device for hydraulic equipment is an important component. It's working reliability and service life, is the measure of hydraulic system is an important index.

Besides the gap is sealed by seals, make two coupling between adjacent surface gap in the liquid can through to seal the minimum clearance.

In non-contact seal, into the self-styled pressure type of sealing and self-styled self-tightening sealing of type (i.e., labiatae seal) two kinds.