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 6135-01-056-4609
NSN 5920-01-320-7888
NSN 5999-01-460-3248
NSN 5985-01-450-5308
NSN 5945-00-850-7330
NSN 6685-01-106-5545
NSN 6620-00-308-2531
NSN 6110-01-160-8652
NSN 5835-01-597-4820
NSN 5975-01-324-1978
NSN 6135-01-168-2944
NSN 5935-01-278-1870