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 for spark-ignition or compression-ignition internal combustion piston engines for use in aircraft except civil
NSN 5920-01-088-8312
NSN 6220-00-308-6330
NSN 5895-01-439-0236
NSN 6220-01-263-9494
NSN 5965-00-871-8987
NSN 5999-01-373-9771
NSN 5965-01-132-1427
NSN 5920-01-226-7876
NSN 6145-00-433-9957
NSN 6105-01-039-2308
NSN 6240-00-717-0844
NSN 5999-00-349-4834