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 6685-01-435-4366
NSN 6150-01-625-6605
NSN 5915-01-382-9248
NSN 5920-01-548-7960
NSN 5895-01-607-7158
NSN 5835-01-163-4215
NSN 5975-01-080-0023
NSN 5920-01-317-9321
NSN 4140-01-394-9252
NSN 5905-01-104-9086
NSN 2925-00-275-1807
NSN 5835-01-083-7037