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 6110-00-839-8026
NSN 5945-01-160-9070
NSN 6110-00-866-6140
NSN 7035-01-443-3052
NSN 6145-01-564-4781
NSN 5905-01-025-6949
NSN 6105-01-341-6142
NSN 6110-01-622-5165
NSN 5895-01-634-0630
NSN 7035-01-604-9657
NSN 6240-01-054-0067
NSN 5855-00-436-3852