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 6110-01-261-3086
NSN 5835-01-390-4667
NSN 6620-01-258-2570
NSN 5910-01-487-8330
NSN 6220-01-364-8666
NSN 5990-01-212-2037
NSN 6320-01-399-6177
NSN 5915-01-446-1016
NSN 6320-01-119-3935
NSN 5960-00-091-8729
NSN 5996-00-104-8119
NSN 5855-01-617-6560