O-ring O-ring is a rubber sealing ring with a circular cross-section. Because its cross-section is O-shaped, it is called O-ring, also called 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.
O-ring is suitable for installed in a variety of mechanical equipment, in the specified temperature, pressure, and different liquid and gas medium, in the static or motion state from the sealing effect. In machine tools, ships, automobiles, aerospace equipment, metallurgical machinery, chemical machinery, construction machinery, mining machinery, petroleum machinery, plastic machinery, agricultural machinery, and various instruments, a large number of applications of various types of sealing components. O-ring seal is mainly used for static seal and reciprocating motion seal. When used for rotary motion sealing, it is limited to low-speed rotary sealing devices. O-ring seal is generally installed in the outer circle or inner circle on the cross-section of the rectangular groove from the sealing effect. O-ring in the oil, acid and alkali, grinding, chemical erosion and other environments still play a good sealing, shock absorption. Therefore, O-ring is the most widely used seal in hydraulic and pneumatic transmission system.
O-ring
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