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 6110-01-632-0606
NSN 5935-01-629-8332
NSN 6105-01-417-2174
NSN 5855-01-205-7030
NSN 6130-01-561-9570
NSN 5996-00-960-1958
NSN 6620-00-963-1319
NSN 5965-01-399-8454
NSN 6110-00-321-1271
NSN 5895-01-604-6572
NSN 4140-01-233-3406
NSN 6135-00-209-6918