Used on nssn submarine valve,assy and detail hull and backup towed sonar. 0.468" center hole diameter seal, static square shape, has 2 round corners 2 x r 0.375 to 0.390, flat side 2.000 to 1.985 in, 2 sides 0.990 to 1.000, material peu (polyether urethane)
Used on b1-bacft,cylinder assy-hydraulic,strut main landing gear. 0.756" center hole diameter omniseal assy, static face seal material cover glass fiber, moly disulfide & virgin tfe