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 6135-01-251-2095
NSN 5990-01-578-5382
NSN 6145-00-862-7069
NSN 6135-00-255-1340
NSN 6685-01-478-5489
NSN 6135-00-152-8729
NSN 5998-00-891-3329
NSN 7035-00-628-3471
NSN 5905-00-630-1095
NSN 5915-01-147-1877
NSN 7035-01-176-7523
NSN 5990-01-631-1952