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 6130-01-281-4747
NSN 7035-01-505-5979
NSN 6105-01-514-8167
NSN 7035-01-271-1643
NSN 5905-01-612-9462
NSN 5950-01-048-4351
NSN 6610-01-125-9899
NSN 6105-01-652-1394
NSN 5925-01-336-8448
NSN 6620-01-573-8003
NSN 5935-01-633-4720
NSN 5990-01-303-6110