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 6650-00-161-4122
NSN 2925-00-480-1531
NSN 6220-01-392-0502
NSN 5835-00-021-5913
NSN 5965-01-050-8447
NSN 5855-01-502-1607
NSN 6320-01-134-7267
NSN 5975-01-650-9250
NSN 6110-01-304-2912
NSN 5950-00-518-1188
NSN 6150-01-122-4922
NSN 5945-01-361-8845