Patent ID: 6029980
Filing Date: 2000-02-29
Classification: F16J

Abstract:
A radial shaft seal used to seal a shaft in a pressurized fluid system, said seal including:a resilient seal body generally having a circumferential shape, said seal body having a circumferential trough;a rigid insert member molded within said seal body, said insert member having a L-shaped cross section;a primary sealing lip located on an inside surface of said seal body, said primary sealing lip in contact with the shaft; andan exclusion lip integrally molded with said seal body directly above said primary sealing lip on a fluid side of said seal body, said exclusion lip generally having a circumferential shape, said exclusion lip is in contact with the shaft, said exclusion lip including a vent aperture, said vent aperture allows fluid to transfer to said primary sealing lip and assures distribution forces are not applied to said exclusion lip by the fluid.