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 6320-00-194-4252
NSN 4140-00-733-7936
NSN 5965-01-633-8849
NSN 5910-00-735-1293
NSN 6110-00-349-3964
NSN 5998-01-460-8204
NSN 5835-01-359-2575
NSN 6220-01-300-4784
NSN 5996-01-632-8592
NSN 5920-00-199-9514
NSN 5935-01-359-2065
NSN 5920-01-438-3640