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 5996-00-138-9072
NSN 5835-01-039-9973
NSN 5855-01-318-7663
NSN 5910-01-500-0086
NSN 6650-01-090-0719
NSN 5975-00-964-7332
NSN 5895-01-204-9039
NSN 5930-01-051-2599
NSN 5945-01-068-1050
NSN 5930-01-571-8762
NSN 4140-01-446-8592
NSN 5950-01-529-6542