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 6145-01-453-1273
NSN 5985-01-391-7458
NSN 5998-00-906-6738
NSN 2925-01-587-3956
NSN 2925-01-263-3638
NSN 6610-01-013-8922
NSN 6220-01-474-5989
NSN 4140-01-495-0538
NSN 5920-01-153-2360
NSN 6145-01-136-9639
NSN 5835-01-302-6844
NSN 5915-01-166-7135