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 5998-01-618-3677
NSN 5950-01-596-6891
NSN 7035-01-230-0250
NSN 5930-00-229-6630
NSN 6610-01-371-3006
NSN 5915-01-538-1753
NSN 6105-01-391-2042
NSN 5915-01-210-9132
NSN 6620-01-090-3803
NSN 6685-01-065-7042
NSN 7035-01-461-1066
NSN 5935-00-642-5798