O-rings are suitable for installation on various mechanical equipment, and they act as sealing at specified temperatures and pressures, in different liquid and gas media, in stationary or moving states. Various types of sealing products are used in large quantities in machine tools, ship engineering, automobile industry, aerospace equipment, metallurgical machinery, chemical machinery, engineering machinery, construction machinery, mining machinery, petroleum machinery, plastic machinery, agricultural machinery and various instruments.

O-rings are mainly used in static sealing and reciprocating sealing environments. When used in rotary reciprocating seals, it is limited to the use of low-speed rotary sealing devices. O-rings are generally installed in grooves with rectangular cross-sections on the outer circle or inner circle to serve as sealing. O-rings can still play a good sealing and shock-absorbing role in environments such as oil resistance, acid and alkali resistance, wear resistance and chemical corrosion resistance. Therefore, the O-ring is the most widely used seal in hydraulic and pneumatic transmission systems.

Reference standards:HGT 2579-2008 O-shaped rubber sealing ring material for ordinary hydraulic systems