Radial shaft seal

Details Radial shaft seal Radial shaft seal

F - Mech Eng,Light,Heat,Weapons

16

J

277/50

F16J 15/52 (2006.01) F16J 15/32 (2006.01)

Patent

CA 2008050

Abstract In a radial seal for a shaft projecting from a space to be sealed, a seal disk has parallel front and rear faces and is affixed to a reinforcement ring. The seal disk is made of an elastic deformable material and at its inner edge, is axially drawn in the direction towards its front face, thereby becoming flared to a frustoconical shape, with its rear face slidably engaging the shaft. The rear face has a helical first groove which encompasses the shaft to provide for retrograde transport of leaking fluid back into the space to be sealed. The front face has a helical second groove which extends substantially parallel to and coaxially with the first groove and is intermediately positioned to the first groove thereby providing increased surface area for the front face. This gives better radiation of frictionally produced heat and increases the service life of the seal.

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