HEAVY-DUTY VALVE STEM SEAL ASSEMBLY

摘要

An integral valve stem seal retainer and spring seat for a valve seal subassembly is disclosed having lower, intermediate and upper portions. An annular sealing member is bonded to the intermediate and upper portions of the metal retainer and an annular flange extends radially outwardly of the lower portion of the retainer to engage at least one coil of a valve spring. The annular sealing member further includes upper and lower portions, wherein the upper portion engages an outer surface of a valve stem while the lower portion engages a top of a thin-walled valve guide.