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 6685-01-391-6790
NSN 5950-01-110-9154
NSN 5999-00-144-2303
NSN 5975-00-248-2560
NSN 6240-00-967-4788
NSN 6645-00-784-8288
NSN 5996-00-983-5549
NSN 7035-01-068-4175
NSN 5905-00-278-5764
NSN 6105-00-252-3233
NSN 5835-00-443-1079
NSN 6620-01-242-9247