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 5920-01-361-5221
NSN 5835-00-706-0829
NSN 6320-01-132-2746
NSN 6650-01-024-9554
NSN 6150-01-175-4333
NSN 5910-00-512-5739
NSN 5925-01-369-2816
NSN 5999-01-087-9483
NSN 5945-00-276-9274
NSN 5855-01-136-9532
NSN 6650-01-533-1267
NSN 6220-01-051-3865