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 5930-00-292-1089
NSN 5935-01-123-2961
NSN 5910-01-440-6907
NSN 6110-00-006-7987
NSN 5950-00-290-8090
NSN 4140-01-307-3143
NSN 5975-01-016-2496
NSN 5998-00-038-5350
NSN 5855-00-256-5562
NSN 2925-01-226-6126
NSN 5905-00-133-5337
NSN 5910-01-113-6636