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 6240-01-590-0197
NSN 6320-01-564-0893
NSN 5945-01-155-5818
NSN 5920-00-054-0172
NSN 5835-00-284-0882
NSN 6610-01-451-4801
NSN 5855-00-688-9954
NSN 5930-01-160-7126
NSN 6130-01-145-5846
NSN 5999-01-461-8280
NSN 5920-01-517-9915
NSN 6145-00-397-5950