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 5985-01-028-1036
NSN 5985-01-029-8795
NSN 5990-01-468-1292
NSN 6105-00-998-3514
NSN 5998-01-370-7052
NSN 5950-01-643-5511
NSN 5965-00-168-9624
NSN 5999-01-158-8163
NSN 5930-01-469-6143
NSN 5998-00-953-2188
NSN 5996-01-594-8747
NSN 6240-01-252-9374