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 6620-00-254-5127
NSN 5935-00-882-8668
NSN 5945-00-236-5998
NSN 5910-01-406-1467
NSN 5975-00-079-0022
NSN 5999-00-160-1386
NSN 5990-01-188-7309
NSN 6145-01-397-6210
NSN 6150-00-405-6399
NSN 5920-01-350-4426
NSN 5920-00-168-9138
NSN 6620-01-408-4464