Used on pratt and whitney gas turbine engine mod ft4a-2 and ft4a-12 onboard 400 ft wagb and 378 ft whec coast guard vessels. 3.130" inside diameter contracting concentric ring style
Used on turbine engine field service. model agt-1500 and container,(nsn 8145-01-112-6574); tm 9-2835-255-34p,dated 14 apr 86. nmaterial cres spec ams 5582 thickness before plating .009-.01; silver plate area indicated per spec ams 2411using gold strike as substitute for nickel. plating thickness .0015- .0025. dimensions appl after plating