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 5920-01-478-7251
NSN 6650-00-569-1762
NSN 4140-01-655-2546
NSN 6320-00-506-2314
NSN 5935-00-062-0526
NSN 5855-01-364-4478
NSN 6130-00-170-4844
NSN 5945-01-043-7056
NSN 6105-00-812-4136
NSN 6150-00-766-8560
NSN 6220-01-185-1136
NSN 4140-01-234-1736