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 6220-00-926-1331
NSN 6150-01-371-3023
NSN 4140-00-091-0869
NSN 5910-00-633-7743
NSN 5835-01-652-0168
NSN 7035-00-327-0458
NSN 6650-01-571-7122
NSN 5895-01-065-4445
NSN 6135-01-317-6021
NSN 2925-01-435-9057
NSN 4140-01-329-2216
NSN 5930-01-202-9307