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 6130-01-523-0148
NSN 5910-01-146-4317
NSN 5945-01-530-8687
NSN 5999-01-460-3579
NSN 5930-00-396-2310
NSN 5835-01-544-5183
NSN 5855-00-560-0110
NSN 5835-01-069-2359
NSN 5930-01-193-4838
NSN 5930-01-094-5584
NSN 6610-01-512-2025
NSN 5950-00-151-9827