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 5930-01-251-5199
NSN 6135-00-284-1406
NSN 5930-00-195-9428
NSN 6240-00-087-1731
NSN 6220-01-631-0414
NSN 6685-01-339-6288
NSN 5910-01-094-6168
NSN 5990-00-898-2675
NSN 5930-01-161-2838
NSN 5915-00-866-4280
NSN 5925-00-215-3758
NSN 4140-01-366-6666