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 5910-00-314-7102
NSN 5915-00-595-8090
NSN 5998-01-451-8551
NSN 6105-01-437-8773
NSN 5945-00-737-1449
NSN 5945-00-819-4288
NSN 5895-01-358-1361
NSN 5935-00-241-7238
NSN 6650-01-552-5930
NSN 6110-01-092-6299
NSN 6650-01-485-5388
NSN 6220-00-819-9325