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 6645-01-481-7698
NSN 6645-01-215-0617
NSN 5945-01-189-5262
NSN 5935-01-314-0236
NSN 6110-01-054-3032
NSN 2925-00-347-7893
NSN 5935-01-366-3611
NSN 5950-01-281-6568
NSN 6220-01-056-5169
NSN 5950-01-380-7614
NSN 5910-01-216-9880
NSN 6150-01-333-7940