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 5960-00-621-5402
NSN 5990-00-678-6006
NSN 5855-01-225-5855
NSN 6150-01-511-4758
NSN 2925-00-169-3775
NSN 2925-00-684-7708
NSN 6110-01-550-9762
NSN 5998-01-624-0678
NSN 6320-01-512-2031
NSN 5835-01-317-4840
NSN 5999-00-281-1021
NSN 5945-01-384-3735