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 6105-00-925-9906
NSN 6685-01-338-5232
NSN 5975-01-418-1858
NSN 6620-01-443-3526
NSN 5930-01-338-0150
NSN 5895-00-630-9305
NSN 5910-01-094-0348
NSN 6130-00-767-4719
NSN 5855-00-198-3197
NSN 7035-01-471-4884
NSN 5960-00-228-5985
NSN 5950-01-162-6205