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 6685-01-279-0647
NSN 2925-00-200-0085
NSN 6110-01-489-0543
NSN 7035-00-481-5182
NSN 6240-00-269-9477
NSN 5935-01-226-8707
NSN 5910-01-467-2404
NSN 5960-01-173-2338
NSN 6220-00-784-5904
NSN 6105-01-627-8118
NSN 5925-01-359-4080
NSN 6220-01-526-1469