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 6610-01-248-4339
NSN 2925-01-514-9358
NSN 6110-00-075-3860
NSN 6135-00-087-5300
NSN 6320-00-194-4252
NSN 4140-00-907-0775
NSN 6240-00-533-1493
NSN 5945-00-167-2756
NSN 5925-01-586-2510
NSN 5999-01-371-8924
NSN 6145-01-452-1966
NSN 6105-01-252-0381