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 7035-01-291-6468
NSN 6320-01-564-0893
NSN 6620-00-383-8740
NSN 5950-01-201-9148
NSN 6220-01-466-4346
NSN 6150-01-626-1263
NSN 6685-00-148-9729
NSN 4140-01-244-2985
NSN 5950-00-834-1947
NSN 6610-01-357-5957
NSN 5975-01-166-9146
NSN 6220-01-398-4130