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 6320-01-106-4414
NSN 5945-01-262-9045
NSN 5960-01-041-9512
NSN 5945-00-580-0873
NSN 5855-01-425-1330
NSN 5935-00-614-3962
NSN 5975-00-401-9913
NSN 6150-00-234-7002
NSN 5950-00-008-8685
NSN 6110-01-613-2047
NSN 5945-01-290-4370
NSN 6220-01-608-5611