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 5996-00-772-1956
NSN 5925-01-522-0439
NSN 5930-00-205-2945
NSN 6105-01-400-3431
NSN 5920-01-462-0055
NSN 6105-01-564-4298
NSN 6685-00-307-7789
NSN 5996-01-067-8716
NSN 5910-01-178-0200
NSN 6620-00-273-8735
NSN 4140-00-606-9453
NSN 2925-01-522-1134