Valve seal

Claim 1

A combination oil seal and seal-retaining means for utilization in conjunction with a valve stem reciprocating in a guide having an exposed shoulder portion, said combination comprising: an integrally formed, metallic, tubular base member having a tubular sidewall, said member being adapted to fit telescopically over and peripherally envelop the exposed shoulder portion of said guide, said base member having a deformable indent extending inwardly from the sidewall thereof to engage said shoulder portion, said indent extending about the entire periphery of said base member and being adapted to deform upon telescopic engagement of said base member and said shoulder portion to accommodate minor variations in the peripheral measurements of said shoulder portion to insure the engagement of said base member thereto, said base member flaring outwardly at its upper reach to form a peripheral shoulder, then extending upwardly to form a tubular seal enveloping sidewall and then extending inwardly to form a compression lip; a preformed generally frustoconical plastic seal member of generally uniform thickness having a generally flat, radially extending portion and a converging axially extending portion, said axially extending portion incorporating an aperture therein adapted to slidingly and sealingly receive said stem, said aperture having a smaller diameter than the stem which is to be slidably inserted therethrough prior to such insertion; a metallic, washerlike element disposed on either side of said radially extending portion of said seal member, said washerlike elements with the seal member positioned therebetween being sandwiched tightly between said shoulder and said compression lip to retain said elements and the radially extending portion of said seal in compressed relationship with respect to one another and in fixed position with respect to said base member.