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 7035-01-256-3973
NSN 6135-01-496-2352
NSN 5935-01-634-0668
NSN 5990-01-417-4402
NSN 5950-00-926-0760
NSN 2925-01-379-0701
NSN 5960-00-183-8016
NSN 6130-01-352-7900
NSN 6650-01-433-0040
NSN 5990-01-202-0001
NSN 5925-01-087-9374
NSN 5935-01-243-8248