0.400" hole diameter 9.000" overall length 2.250" overall width 4 bolt hole quantity 0.280 in. distance from edge of gasket to center of bolt holes non-circular
0.250" hole diameter 5.000" overall length 2.680" overall width 4 bolt hole quantity 0.250 in. distance from edge of gasket to center of bolt holes non-circular
Used on sturgeon class ssn (637);submarine engineering and diesel systems;supply class aoe;austin ship class lpd-4 amphibious transport docks. 0.6681" outside diameter circular