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 6610-01-542-9725
NSN 5945-01-609-9809
NSN 6220-01-499-8932
NSN 6240-00-318-7162
NSN 5965-01-296-8991
NSN 6130-00-851-2767
NSN 6220-01-582-8552
NSN 6220-01-381-1074
NSN 4140-01-308-1964
NSN 5935-00-260-0516
NSN 5925-00-996-5183
NSN 2925-00-673-8246