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 4140-01-154-8632
NSN 5935-00-362-3873
NSN 5996-01-114-0814
NSN 2925-01-331-5039
NSN 6620-01-373-0174
NSN 7035-00-834-2090
NSN 5990-01-354-8965
NSN 6320-00-116-3658
NSN 5835-01-297-1909
NSN 5855-01-242-8428
NSN 5996-01-282-0702
NSN 5990-01-562-4521