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 5910-01-422-3721
NSN 6685-01-493-1809
NSN 5920-01-495-2225
NSN 5835-01-082-8841
NSN 6135-01-495-0933
NSN 5930-01-062-8682
NSN 6145-01-495-3310
NSN 5855-01-100-3272
NSN 6240-01-386-5952
NSN 5985-01-314-1838
NSN 6650-01-658-1748
NSN 6130-00-795-9898