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 5835-00-611-0607
NSN 6685-00-452-6257
NSN 6645-00-492-9487
NSN 6135-01-100-9056
NSN 7035-01-102-8111
NSN 6110-01-596-1715
NSN 5925-01-466-0676
NSN 5990-00-031-1686
NSN 5920-00-228-1221
NSN 6220-01-094-5551
NSN 5990-01-416-6009
NSN 5910-01-553-4137