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 6145-01-037-2842
NSN 6135-01-351-2690
NSN 5998-01-061-9346
NSN 6135-01-164-3561
NSN 6620-01-448-1423
NSN 5935-01-646-7803
NSN 6220-01-406-5351
NSN 5945-00-249-1645
NSN 6145-00-269-4271
NSN 5950-00-682-5379
NSN 5999-00-466-3226
NSN 5905-01-011-2759