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 5930-01-046-9771
NSN 6135-01-205-5965
NSN 5895-00-853-7206
NSN 5999-01-653-1261
NSN 5920-01-651-0291
NSN 5945-01-142-3321
NSN 5965-01-390-9249
NSN 6130-00-999-4448
NSN 5996-01-275-0706
NSN 7035-01-648-3535
NSN 5925-01-119-7888
NSN 6650-00-316-4889