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 5915-00-234-0809
NSN 6110-01-580-2475
NSN 6105-00-232-9788
NSN 5990-00-226-1152
NSN 5945-00-959-6309
NSN 6150-01-465-4397
NSN 5990-01-032-3832
NSN 5990-00-419-0236
NSN 6645-00-806-6961
NSN 5975-00-111-1226
NSN 6645-00-991-8704
NSN 6145-00-319-4643