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 6320-01-393-7022
NSN 5895-01-589-4933
NSN 5975-00-404-1034
NSN 5920-01-400-3562
NSN 6620-00-264-8030
NSN 5985-01-480-2150
NSN 6320-00-149-7570
NSN 6130-00-878-9141
NSN 5895-00-554-4573
NSN 6320-00-343-1798
NSN 5999-00-137-9063
NSN 5996-01-513-9656