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 5910-00-983-7818
NSN 6620-01-308-2692
NSN 6105-01-552-9429
NSN 6135-00-128-1633
NSN 6150-00-104-8035
NSN 5935-00-113-5171
NSN 5945-00-232-4058
NSN 5855-00-962-5792
NSN 6650-00-871-2983
NSN 2925-01-177-1598
NSN 5855-01-067-8841
NSN 5950-01-232-4111