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 6150-00-945-3368
NSN 6620-01-623-2530
NSN 5895-01-546-5031
NSN 5855-01-364-8193
NSN 6135-00-120-1034
NSN 6610-01-488-7408
NSN 5935-00-835-2680
NSN 5998-00-843-1125
NSN 5905-01-308-6289
NSN 5910-01-573-6538
NSN 6145-01-570-5489