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 6145-01-291-9152
NSN 6650-01-123-3110
NSN 6105-01-142-4551
NSN 5999-01-451-4906
NSN 5945-00-144-0071
NSN 6150-01-493-7965
NSN 6240-00-808-7909
NSN 6685-00-642-0533
NSN 6620-00-947-3889
NSN 5855-01-451-1163
NSN 4140-01-102-2244
NSN 2925-01-025-0082