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 6110-01-461-7452
NSN 5965-01-426-8325
NSN 5930-00-480-6005
NSN 6620-01-647-1393
NSN 6220-00-694-6649
NSN 5945-00-889-9948
NSN 6110-01-531-1220
NSN 6645-01-545-5536
NSN 5930-01-235-6679
NSN 5950-00-678-9649
NSN 6620-01-461-0899
NSN 5999-01-417-6610