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 2925-00-251-0105
NSN 5945-00-104-5922
NSN 5990-01-426-7350
NSN 5905-00-171-2158
NSN 5998-00-191-5303
NSN 6105-00-222-4708
NSN 5835-01-453-3074
NSN 5915-01-024-5188
NSN 6650-01-497-1773
NSN 5835-01-178-4154
NSN 5915-00-351-7355
NSN 6150-01-004-6199