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 6220-01-384-3879
NSN 5999-01-461-3249
NSN 5835-01-030-2519
NSN 5855-01-500-2531
NSN 6105-01-179-4717
NSN 5935-00-316-1041
NSN 6105-00-869-0782
NSN 5895-01-573-7542
NSN 6110-00-544-9521
NSN 5996-01-624-7629
NSN 6110-00-177-7810
NSN 6650-01-327-4122