Upside-down square-up valve stem seal

In a valve assembly of an internal combustion engine having a valve stem seal, wherein the valve stem seal includes an outer peripheral surface and an inner sealing surface for minimizing ingress of a liquid upwardly from an intake port area into an overhead engine area comprising:

• at least one sealing lip disposed on an upper portion of the inner sealing surface and extending away from the inner sealing surface, said at least one sealing lip having a generally square lower corner.

A method of minimizing ingress of a liquid upwardly from an intake port area into an overhead engine area comprising the steps of:

• providing an annular body having an outer surface and an inner sealing surface, said inner sealing surface including an upper portion and a lower portion, said upper portion having a smaller diameter than said lower portion;
• and
• placing at least one sealing lip on said upper portion of said inner sealing surface extending away from said inner sealing surface, said at least one sealing lip having a generally square lower corner.