Used on hatch,striked. 264.500" overall length 1.250" overall width hatch gasket ddg closures has two x 45 deg x .06 edges, and a .19 radius slot down the center of strip which is centered at 0.63in from edge of strip rectangular
Used on nssn class submarine valve assy and details hull and backup towed sonar. 1.372" outside diameter seal shear has 4 machine edges; 4 x 0.050 x 45 deg circular