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 2925-01-424-0235
NSN 5950-01-303-7508
NSN 6130-01-188-8842
NSN 5990-01-440-7135
NSN 6145-01-513-2930
NSN 6110-01-349-8680
NSN 6650-01-552-9076
NSN 5998-01-649-5974
NSN 6240-01-326-6937
NSN 5965-01-063-7894
NSN 5996-01-534-8199
NSN 5930-00-908-5074