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 5910-01-648-2045
NSN 5835-01-303-6563
NSN 5965-01-100-0942
NSN 6650-01-195-0006
NSN 5905-01-160-8765
NSN 5925-01-531-4577
NSN 6130-00-329-3486
NSN 5965-01-209-2838
NSN 5835-01-632-6627
NSN 6685-00-928-4809
NSN 6620-01-452-4034
NSN 4140-01-083-1919