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 5960-01-399-4327
NSN 5999-00-985-4946
NSN 6145-01-550-6050
NSN 5996-01-518-9868
NSN 6240-01-019-1308
NSN 6320-01-281-3341
NSN 5855-01-378-1888
NSN 5910-01-125-1746
NSN 5930-00-650-4639
NSN 5905-00-244-1530
NSN 6220-01-562-3819
NSN 6320-00-139-1090