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 5996-01-327-8782
NSN 6240-01-653-1277
NSN 5975-00-290-1795
NSN 6645-01-502-3068
NSN 5945-00-316-5300
NSN 5935-01-281-5843
NSN 5905-00-633-8370
NSN 4140-01-272-8091
NSN 5999-01-367-6162
NSN 5996-01-023-7896
NSN 5835-00-529-6307
NSN 5996-00-079-0384