Used on reduction gear model 46123r100 & 46123r101 onboard 378 ft whec coast guard vessels. 6.305" inside diameter contracting concentric ring style finish - alodine 1200; mil-c-5541; 12 holes provided for mtg; 0.375 drill; 1.19 dp; inside surf. of seal is grooved with 11 grooves 0.31 ins dp
0.313" hole diameter 13.000" overall length 0.750" overall width 2 bolt hole quantity 0.375 inch radius along length on each end of one side color black non-circular