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 4140-01-252-1005
NSN 5905-01-242-7247
NSN 5990-01-162-9220
NSN 2925-00-504-2363
NSN 5925-01-398-1819
NSN 5990-01-246-2488
NSN 5965-01-417-6946
NSN 5935-01-431-0917
NSN 5965-00-929-9415
NSN 6620-01-352-1854
NSN 5945-00-932-2852
NSN 6150-00-186-7809