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 5925-01-440-9364
NSN 5945-01-536-3925
NSN 5910-00-033-3761
NSN 5930-01-536-9457
NSN 2925-01-327-3069
NSN 4140-00-724-1296
NSN 4140-00-753-9204
NSN 5945-00-800-4214
NSN 5935-01-310-1556
NSN 5930-01-519-8000
NSN 7035-01-287-9817
NSN 5945-00-422-0488