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 5915-00-600-6393
NSN 5910-01-432-6140
NSN 6150-01-331-1651
NSN 5905-01-418-1740
NSN 6645-01-390-6520
NSN 6130-01-176-0423
NSN 6685-01-091-0844
NSN 5975-01-338-5760
NSN 6135-01-466-1153
NSN 5910-01-429-9038
NSN 5935-00-471-9928
NSN 6610-01-625-6855