Patent ID: 8656840

Claim:
A gasket for sealing between the manway nozzle of a containment vessel and an associated cover, the cover being movable relative to said manway nozzle to open and close an opening in said nozzle, said nozzle having an upper contact surface and said cover having a lower contact surface, the gasket comprising: an annular ring member having a generally planar annular body portion defining an upper annular cover sealing surface and a lower annular nozzle body sealing surface, said upper annular cover sealing surface including at least one annular upstanding chevron extending therefrom and configured to engage the lower contact surface of the cover, and said lower annular nozzle body sealing surface including at least one annular lower chevron extending therefrom in a direction generally opposite said upstanding chevron and configured to engage the upper contact surface of the nozzle.