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 6145-01-202-3539
NSN 5960-00-760-7382
NSN 5950-01-085-4581
NSN 6645-01-154-2228
NSN 6145-01-395-9102
NSN 6320-01-582-6752
NSN 6650-01-655-0762
NSN 6130-01-264-2636
NSN 6150-01-442-4997
NSN 5999-01-513-6280
NSN 6685-01-348-7025
NSN 5835-01-545-2629