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 5990-00-296-4825
NSN 5990-01-486-2556
NSN 6105-00-131-2432
NSN 6610-00-561-9381
NSN 5915-00-528-7992
NSN 6150-01-284-7746
NSN 6620-00-316-2167
NSN 6620-00-098-5652
NSN 6650-00-161-4122
NSN 6620-01-412-0938
NSN 5930-01-127-5024
NSN 5910-00-212-5969