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 6645-01-435-8356
NSN 6650-01-392-6076
NSN 6320-00-228-5678
NSN 6135-01-434-1790
NSN 6685-01-384-3143
NSN 6135-01-400-2947
NSN 2925-01-011-8732
NSN 5945-01-437-9115
NSN 2925-01-633-4048
NSN 6650-01-053-1816
NSN 5895-01-513-9260
NSN 5996-01-315-6032