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 6650-01-214-9728
NSN 5990-00-409-3594
NSN 5910-01-020-9476
NSN 6220-00-566-2848
NSN 6645-01-421-2445
NSN 6220-01-030-7338
NSN 5996-01-526-0196
NSN 5985-01-316-4982
NSN 6130-01-352-1621
NSN 5999-00-659-2481
NSN 5945-01-089-5312
NSN 6645-00-618-9496