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 5960-00-822-2571
NSN 5855-01-406-4821
NSN 5985-00-066-7616
NSN 5930-00-752-7455
NSN 5998-00-282-2097
NSN 5930-00-222-6187
NSN 5925-01-594-1873
NSN 6320-01-056-1164
NSN 6135-01-215-1245
NSN 5996-00-862-1122
NSN 5998-01-649-3464
NSN 6105-01-626-9622