Scope of application 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 is mainly used for static sealing and reciprocating sealing. 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. The O-ring seal has its own sealing effect and does not need periodic adjustment. When used for sliding sealing, the sealing effect can not be affected by the movement direction. It is small in size and convenient to use. Because of the large adaptability of the sealing ring, the application range is very wide. However, it is easy to deform when the pressure peak reaches a certain pressure, which may extrude the gap. It is widely used in aviation and water conservancy projects.
