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 5945-00-908-1965
NSN 5910-01-139-5085
NSN 5910-00-586-2641
NSN 6645-01-338-1423
NSN 6240-00-526-0243
NSN 5975-00-736-3420
NSN 6645-01-421-4007
NSN 5935-01-138-0693
NSN 6150-00-456-7446
NSN 5965-01-358-9758
NSN 5905-01-105-8839
NSN 6150-00-563-9081