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 5925-01-239-4414
NSN 5999-01-658-3788
NSN 5975-01-150-1654
NSN 6135-00-437-5182
NSN 6645-01-290-9428
NSN 5998-00-385-9007
NSN 5910-00-300-4988
NSN 5925-00-451-2061
NSN 5915-01-183-6752
NSN 6220-01-546-4088
NSN 4140-00-944-7318
NSN 6650-00-992-4540