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 6220-00-236-0588
NSN 6135-01-059-4055
NSN 5985-01-258-2372
NSN 5835-01-149-6855
NSN 6620-01-378-4108
NSN 5895-01-503-2043
NSN 5920-01-492-8310
NSN 5945-01-031-4109
NSN 5999-01-413-9948
NSN 6620-00-197-5130
NSN 6220-01-290-8764
NSN 5855-01-093-8202