O ring (O-rings) is a rubber sealing ring with a circular cross section. Because of its O-shaped cross section, it is called an O-ring, also called an O-ring. It began to appear in the middle of the 19th century, when it was used as a sealing element for steam engine cylinders.
scope of application：O-rings are suitable for installation on various mechanical equipment, and can act as a seal in a static or moving state under 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, engineering machinery, construction machinery, mining machinery, petroleum machinery, plastic machinery, agricultural machinery, and various instruments and meters. element.
O-rings are mainly used for static sealing and reciprocating motion sealing. When used for rotary motion sealing, it is limited to low-speed rotary sealing devices. The O-ring is generally installed in a groove with a rectangular cross-section on the outer circle or the inner circle to play a sealing role.
O-ring seals still play a good role in sealing and shock absorption in environments such as oil resistance, acid and alkali, abrasion, and chemical erosion.
Therefore, the O-ring is the most widely used seal in hydraulic and pneumatic transmission systems.
