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 6135-00-235-1938
NSN 5996-01-591-6087
NSN 5895-01-294-4740
NSN 5905-01-034-6613
NSN 6105-00-273-1106
NSN 6620-01-262-9489
NSN 5975-00-553-7151
NSN 2925-01-187-0423
NSN 4140-01-444-9383
NSN 6135-00-299-6918
NSN 4140-01-225-3094
NSN 5930-01-528-6757