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 5985-00-136-0418
NSN 5920-00-449-6245
NSN 6620-01-435-8335
NSN 6220-01-518-1968
NSN 6145-01-393-4899
NSN 5910-01-170-5074
NSN 5835-01-456-3922
NSN 5915-01-379-0307
NSN 2925-01-106-3552
NSN 6685-00-343-8230
NSN 6685-01-492-3382
NSN 4140-00-078-2944