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 5999-01-543-1731
NSN 6135-00-294-0950
NSN 4140-01-115-9271
NSN 5975-01-407-5910
NSN 5990-00-269-2226
NSN 6145-01-333-3813
NSN 5950-00-344-4442
NSN 5985-01-555-8359
NSN 5945-01-173-8118
NSN 6650-00-871-2983
NSN 6610-00-160-0905
NSN 5920-01-230-2660