Used on f-18 e/v fighter aircraft. plus seal assembly special plus seal ii assembly dimensions are for piston seal installation for one back-up ring gland per mil-g-5514; seal assy has:one solid back-up ring; plus seal ii cap with no grooves, elastomer energizer equilavent to mil-r-83485
Used on fighter aircraft (f18 e/f). navy: housing, ring gear, flap this item has teeth on the inside diameter; next higher assy is transmmission, mechanical, vehicular; nsn's 2520-01-455-2530, 2520-01-509-3308, 2520-01-509-3222
consists of: gland, hull 1, per mil-b-24480 or astm-b-150 alloy C63Z00; sleeve, centrifugal casting 1, per qq-n-281 & astm-a-494, m-35-1; ring, upper 1, per mil-b-24480 or astm-b-150 alloy C63Z00; ring lower 1, per mil-b-24480 or astm-b-150 alloy C62Z00