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 5920-00-100-2582
NSN 5835-01-116-2369
NSN 7035-01-495-5063
NSN 6105-01-317-3657
NSN 6130-01-446-5319
NSN 5855-01-389-3091
NSN 6240-00-136-2602
NSN 5910-01-189-5982
NSN 2925-00-201-8247
NSN 5990-00-110-1153
NSN 5855-01-657-5917
NSN 6220-01-510-9765