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 6645-01-363-5944
NSN 6220-01-317-2151
NSN 5999-00-186-9314
NSN 5998-00-578-8582
NSN 5965-00-230-8818
NSN 6110-01-218-5257
NSN 5985-01-481-4234
NSN 6685-00-169-6505
NSN 6650-01-352-1659
NSN 5925-01-446-4974
NSN 5920-01-281-7354
NSN 5855-01-433-2220