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 5950-01-660-6897
NSN 5999-01-390-0209
NSN 7035-01-476-7316
NSN 6135-00-152-8729
NSN 5960-01-097-6817
NSN 4140-01-524-3276
NSN 5975-01-126-0180
NSN 6110-01-492-6202
NSN 5915-00-294-9419
NSN 6145-01-485-3157
NSN 6650-01-283-6238
NSN 6150-01-463-3389