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 6130-01-199-6974
NSN 6240-00-689-8504
NSN 6685-00-116-6026
NSN 5935-01-344-3228
NSN 5835-01-486-0545
NSN 5910-01-514-4152
NSN 5920-01-208-2689
NSN 5905-00-567-4959
NSN 5925-01-375-3455
NSN 5996-01-051-6472
NSN 5915-01-433-2128
NSN 5960-01-025-2526