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 5998-01-486-8695
NSN 6150-01-038-3958
NSN 5985-01-452-2988
NSN 5990-00-723-2482
NSN 5935-00-583-3152
NSN 5945-00-935-6922
NSN 6105-00-248-5772
NSN 6105-01-260-0177
NSN 5855-01-406-7237
NSN 4140-01-581-7160
NSN 6645-00-614-5302
NSN 5910-01-605-6985