Patent ID: 8166891
Filing Date: 2012-05-01
Classification: B61D

Abstract:
1. A gasket for sealing between the manway nozzle of a containment vessel and an associated cover 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, each said sealing surface including at least one annular upstanding chevron extending therefrom, wherein each said at least one upstanding chevron extending from said upper annular cover sealing surface and said lower annular nozzle body sealing surface is of varying height circumferentially about said generally planar annular body portion relative to said upper annular cover sealing surface and said lower annular nozzle body sealing surface, and wherein said chevrons have locations of maximum height (h wherein said upper annular cover sealing surface and said lower annular nozzle body sealing surface each include two concentric radially spaced apart chevrons extending therefrom, wherein the height of the chevrons relative to the surface from which they extend circumferentially about said gasket defines a generally sinusoidal pattern, and wherein said gasket includes a radial outer leg portion depending from said generally planar annular body portion radially outward of said chevrons, and at least one tab depends from said radial outer leg portion radially aligned with one of said locations where the height of said chevron is at a maximum (h