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 5905-01-572-4142
NSN 5996-01-318-0646
NSN 6105-01-214-6105
NSN 5960-01-505-2426
NSN 5990-00-188-6111
NSN 5935-00-853-6838
NSN 2925-00-332-1361
NSN 5855-00-482-9876
NSN 5920-01-429-9059
NSN 6240-01-576-4297
NSN 5905-01-378-7738
NSN 6320-00-456-0836