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 6130-01-268-1703
NSN 5999-01-394-5186
NSN 6150-01-634-0575
NSN 5925-01-619-8852
NSN 6150-00-195-1827
NSN 5925-00-066-6898
NSN 5960-01-303-5884
NSN 4140-01-148-3591
NSN 6620-01-091-3722
NSN 5990-01-416-6009
NSN 6610-01-327-3187
NSN 6240-01-323-7032