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 5935-01-483-9800
NSN 5935-01-010-2729
NSN 6645-00-242-0480
NSN 5920-01-044-5621
NSN 5935-01-412-1209
NSN 6150-00-363-7102
NSN 2925-00-964-7128
NSN 5920-01-426-5164
NSN 6145-01-539-0473
NSN 5985-01-524-3498
NSN 5960-01-093-6981
NSN 5935-01-578-6295