Hydraulic seals static seals and dynamic seals distinguish

Hydraulic seals Static seals: according to the working pressure, static seal can be divided into low-pressure and high-pressure static sealing static sealing. Hydraulic seals commonly used in low-voltage static sealing material is relatively soft, wide gaskets gasket, high pressure static sealing material is hard, the contact width is very narrow metal gasket. Hydraulic seals Dynamic Seals: Seals by its relative movement of the zero member is in contact, can be divided into contact and non-contact seal seal. Generally contact seal sealing, but by friction, wear limits apply to the lower surface of the seal line of the occasion. In the contact seal in the contact position by the seal can be divided into the circumferential (radial) seal and seal. Also known as seal mechanical seals hydraulic seals. Non-contact dynamic seal hydraulic seal labyrinth seals and dynamic seals. The former is the use of fluid throttling effect should select static or dynamic O-ring seal the gap between what is the difference limit drain, a large amount of leakage, commonly used in the inter-stage sealing tightness; less demanding applications. Dynamic seals Hydraulic seals centrifugal seal, floating ring seal, spiral sealing, depending on the power generating element indenter counteract the pressure differential across the seal to overcome the leak, it has a high sealing performance, but energy consumption, and it is difficult get high head. Non-contact seals, because the sealing surfaces not in direct contact, start low-power, long life.