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 5925-00-262-5651
NSN 5935-00-469-3711
NSN 6620-01-162-0220
NSN 6135-01-424-1114
NSN 6320-01-415-0953
NSN 5930-01-093-6331
NSN 5960-00-998-4324
NSN 5935-01-196-6864
NSN 6610-00-948-5003
NSN 6150-00-408-7384
NSN 6320-01-176-8367
NSN 5999-01-449-7266