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 6220-01-593-5940
NSN 5990-00-435-8301
NSN 5945-01-235-4093
NSN 5996-01-633-6119
NSN 5950-00-690-3475
NSN 5945-00-991-3828
NSN 7035-01-145-5059
NSN 5985-01-283-9489
NSN 5998-01-290-2957
NSN 5835-01-632-6627
NSN 5975-01-215-1205
NSN 5935-00-242-5913