Rubber O-rings are suitable for a variety of mechanical equipment. Rubber O-rings play a sealing role in static or dynamic condition with the rules of temperature and pressure, as well as the different liquid and gas medium. Rubber O-rings are widely used in the 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. The Rubber O-ring is mainly used for static and reciprocating seals. For rotary motion seals, Rubber O-ring is only used for low speed rotary seal equipment. Rubber O-rings general fit in the groove of rectangular cross-section of the outer or inner circle for sealing. And Rubber O-ring is the seal which is most widely used in hydraulic and pneumatic transmission systems.
The quality inspection guidelines for Rubber O-rings include general tests (hardness, tear strength, tear elongation, tear strength, specific gravity), thermal aging test (hardness change, tear strength change, elongation at break Change, volume change), tightening and durability deformation, oil resistance test (hardness change, tear strength changes, elongation change tear, volume changes).