A circular shaped item with an aperture manufactured to predetermined dimensions, constructed with a rectangular cross section that may be solid, with joint, or in a helical form that facilitates spiral wrap installation. It prevents seal extrusion under pressure and is designed to fit on the down-pressure side of a gland groove with a packing, preformed or o-ring.
NSN 7035-00-206-6123
NSN 6650-01-110-2142
NSN 5945-01-507-4242
NSN 5895-00-966-6452
NSN 2925-01-184-9604
NSN 6135-00-906-0984
NSN 6145-00-264-8359
NSN 5920-01-435-5091
NSN 5855-01-607-6521
NSN 5950-01-204-4637
NSN 5925-01-462-7251
NSN 5910-01-512-0235