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 5996-00-137-2684
NSN 7035-01-155-0153
NSN 5950-01-648-0061
NSN 5965-01-225-1728
NSN 6320-01-280-5091
NSN 4140-00-421-9772
NSN 5996-00-583-9498
NSN 5930-01-319-4803
NSN 5915-00-286-3272
NSN 5975-01-461-8911
NSN 6105-00-733-3090
NSN 6135-01-159-9705