Patent ID: 6848671
Filing Date: 2005-02-01
Classification: F01L

Abstract:
1. A valve stem seal assembly comprising an elastomeric seal body and a cylindrical retainer defining a longitudinal axis, said retainer comprising an upper end portion that circumferentially supports said seal body; said elastomeric seal body comprising an annular valve stem seal adapted for sealingly engaging a reciprocally movable valve stem; said cylindrical retainer further comprising a lower extremity defining a radially outwardly extending spring seat flange having an uninterrupted outer periphery defined between an upper surface and a bottom surface, said bottom surface adapted to bear against a cylinder head deck, wherein said bottom surface comprises at least one protrusion spaced radially inwardly from said outer periphery and extending axially downwardly therefrom, said protrusion adapted for engagement with the cylinder head deck.