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 5965-00-289-6280
NSN 5835-01-398-3859
NSN 6685-01-503-5062
NSN 5835-01-432-8801
NSN 5945-00-247-8610
NSN 5920-01-339-7421
NSN 5895-01-272-6354
NSN 5895-01-462-1187
NSN 6130-01-598-4304
NSN 6130-00-759-1409
NSN 6130-01-357-6602
NSN 5999-01-616-9193