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 6220-01-561-1602
NSN 4140-01-029-4211
NSN 6145-01-519-8210
NSN 5960-00-281-0824
NSN 6620-01-615-8637
NSN 5990-01-333-2294
NSN 7035-01-173-1513
NSN 5965-01-262-3452
NSN 6135-00-567-1322
NSN 5915-01-226-4300
NSN 6110-01-611-9030
NSN 6145-01-186-1334