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 5999-01-188-2146
NSN 5950-00-374-0897
NSN 6135-01-027-7543
NSN 5990-00-800-2521
NSN 7035-00-803-3056
NSN 5990-01-278-9985
NSN 5996-00-401-4502
NSN 4140-01-188-8160
NSN 5960-01-020-6316
NSN 5920-00-059-3543
NSN 6135-01-226-1396
NSN 6240-01-447-3199