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 7035-01-366-5912
NSN 5930-01-398-0656
NSN 6135-01-260-7180
NSN 4140-01-640-6637
NSN 5855-00-610-4052
NSN 6320-00-583-3105
NSN 5855-01-088-4699
NSN 5960-00-824-0052
NSN 5999-00-489-9845
NSN 5920-00-199-9514
NSN 5925-01-462-2209
NSN 6240-00-165-5868