A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts and accessories, nesoi, of bodies (including cabs) of heading 8701 to 8705
NSN 5975-01-139-0121
NSN 5990-00-960-6310
NSN 7035-00-931-9415
NSN 6620-01-336-6646
NSN 5945-01-089-9800
NSN 5855-01-609-8000
NSN 5920-00-548-7635
NSN 5998-01-418-3443
NSN 4140-01-307-3143
NSN 5935-00-529-0319
NSN 5935-01-114-7124
NSN 6240-01-327-4945