Patent ID: 6641141
Filing Date: 2003-11-04
Classification: F16J,F16K

Abstract:
A self-contained anti-blowout seal comprising:a seal jacket having a static seal surface and a dynamic seal lip with a cavity therebetween, said cavity being open to one side of said seal jacket; a retaining ring, disposed in part, within said cavity and proximate said static seal surface for pressing said static seal surface against a mounting surface, said retaining ring having a surface, extending outside of said cavity, for bearing against said mounting surface and a depending portion extending over the cavity opening, said depending portion having at least one vent hole communicating with said cavity for enabling a sealing media to enter and exit said cavity as the seal is pressure energized; a ledge extending from the retaining ring depending portion and engaging said dynamic seal lip, for preventing seal lip blowout; and a biasing element disposed in said cavity for forcing said dynamic seal lip against a moving member.