O-ring is suitable for being installed on various mechanical equipment, and it can play the role of sealing under the static or moving state in the specified temperature, pressure, and different liquid and gas media. Various types of seals are widely used in machine tools, ships, automobiles, aerospace equipment, metallurgical machinery, chemical machinery, construction machinery, construction machinery, mining machinery, petroleum machinery, plastic machinery, agricultural machinery, and various instruments. element. Silicone O-rings Silicone O-rings have excellent heat resistance, low temperature elasticity, and particularly excellent resistance to oxidation and ozone. They have high air permeability and selectivity to gas transmission. Good electrical insulation performance (volume resistance is greater than 1016 ohm.cm, breakdown voltage is above 30kv / mm), corona resistance and arc resistance. However, the conductive carbon black, nickel powder, aluminum powder, and silver powder O-rings are mainly used for static sealing and reciprocating sealing. When used for rotary motion seals, it is limited to low-speed rotary seals. The O-ring is generally installed in a groove with a rectangular cross section on the outer or inner circle to play a sealing role.
