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 5895-01-417-3218
NSN 5920-01-135-7715
NSN 5965-00-468-3071
NSN 5925-01-388-1661
NSN 5910-01-245-2264
NSN 5998-01-440-6133
NSN 6645-01-557-3159
NSN 6135-01-572-2207
NSN 6145-01-289-0732
NSN 5975-01-068-6367
NSN 5835-00-710-7537
NSN 4140-00-155-8012