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 5935-01-010-8577
NSN 6320-00-186-6452
NSN 2925-01-123-5856
NSN 5855-01-590-3323
NSN 5999-01-389-2428
NSN 6105-01-523-9973
NSN 2925-01-564-8043
NSN 5996-01-358-0418
NSN 5935-01-441-2445
NSN 5945-01-232-9939
NSN 5915-01-212-9590
NSN 5925-00-222-8263