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 4140-00-196-7139
NSN 5855-00-256-5562
NSN 5835-00-941-4959
NSN 5985-00-489-8417
NSN 5960-01-656-6343
NSN 4140-00-823-9194
NSN 5996-01-155-1649
NSN 6135-00-998-5884
NSN 5999-01-026-1644
NSN 6240-01-501-4287
NSN 2925-01-198-7528
NSN 5925-00-553-2500