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 6220-01-507-9820
NSN 5895-01-423-1042
NSN 6145-00-493-4089
NSN 5990-00-945-2332
NSN 5998-00-148-9718
NSN 5950-01-252-8698
NSN 6320-01-462-2295
NSN 5965-01-465-4370
NSN 5930-01-340-0658
NSN 5996-01-010-3816
NSN 5945-01-044-8242
NSN 5920-00-929-8095