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 5905-00-596-0189
NSN 6145-01-634-0388
NSN 7035-00-167-7411
NSN 5999-01-273-0151
NSN 2925-01-048-8464
NSN 5915-00-584-3512
NSN 5945-00-189-0650
NSN 7035-00-490-0485
NSN 5950-01-571-8541
NSN 6650-01-150-6599
NSN 6145-00-310-2598
NSN 5835-01-023-8733