Used on 2.5 gal flowthrough discharge desurger,1200 psi;seawolf class ssn. anti-extrusion ring materal c-276 a nickel-molybdenum-chromium alloy with addition of tungsten
Used on b-1 aircraft. 0.205" inside diameter omniseal assembly static face seal (AR204a x-sec) internal pressure face seal with corrosion resistant energizer spring
Used on ch-53a/d/e;ch-53 helicopter. 0.612" inside diameter 0.612" center hole diameter CEC4-5812 two .020 x .020 notches 180 deg apart; inter ring is 6 sided