Upside-down square-up valve stem seal

Details Upside-down square-up valve stem seal Upside-down square-up valve stem seal

F - Mech Eng,Light,Heat,Weapons

01

L

F01L 3/08 (2006.01)

Patent

CA 2521353

A valve stem seal of an internal combustion engine is described wherein the valve stem seal includes an outer peripheral surface and an inner sealing surface. The inner sealing surface minimizes ingress of a liquid upwardly from an intake port area into an overhead engine area by having at least one sealing lip disposed on an upper portion of the inner sealing surface and extending away from the inner sealing surface. The sealing lip includes a generally square lower corner.

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