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 7035-00-541-8516
NSN 6145-01-451-4304
NSN 6220-01-170-0694
NSN 5950-00-424-2920
NSN 5905-01-199-9019
NSN 5965-01-142-7862
NSN 7035-01-509-1959
NSN 5996-00-111-3379
NSN 5999-00-278-5563
NSN 7035-01-129-7834
NSN 4140-01-497-6958
NSN 5920-00-683-7883