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 6645-01-611-9391
NSN 6135-00-274-4037
NSN 6650-00-558-2532
NSN 5930-01-446-1543
NSN 6650-01-442-4950
NSN 5930-00-857-7249
NSN 5960-01-148-9916
NSN 6320-00-845-3261
NSN 5835-00-217-2147
NSN 5930-01-394-0045
NSN 5910-01-590-9704
NSN 6150-01-429-2924