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 6150-01-373-8628
NSN 6135-01-550-8998
NSN 6650-00-964-9470
NSN 5950-00-702-6862
NSN 5920-01-228-6830
NSN 7035-01-501-7259
NSN 5996-00-052-6533
NSN 6150-00-065-8417
NSN 5998-00-156-4574
NSN 6145-00-643-4962
NSN 6320-00-925-0558
NSN 5935-01-068-4488