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 5990-00-838-1082
NSN 5999-01-359-7476
NSN 5985-00-208-0572
NSN 2925-01-467-1192
NSN 5910-00-195-5606
NSN 6135-01-091-6021
NSN 6145-01-446-8680
NSN 5950-00-264-0283
NSN 5985-01-337-5017
NSN 7035-01-232-7263
NSN 5990-01-539-4653
NSN 6105-00-451-1206