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 5990-00-254-4825
NSN 6685-00-454-7530
NSN 5920-01-132-9395
NSN 5925-01-309-7360
NSN 6135-01-205-5965
NSN 5999-01-491-5904
NSN 6110-00-072-9394
NSN 5975-00-231-2985
NSN 5930-01-050-1100
NSN 7035-01-217-6263
NSN 5920-00-920-7956
NSN 5935-00-121-3884