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 5990-01-093-1877
NSN 5985-01-239-9537
NSN 6650-00-907-8565
NSN 6645-01-418-8035
NSN 5999-01-106-3041
NSN 4140-00-126-4685
NSN 5965-00-781-3578
NSN 6220-00-235-3565
NSN 5855-01-513-8367
NSN 5855-00-688-9954
NSN 5975-00-071-6918
NSN 5935-01-196-1245