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 5950-01-376-7841
NSN 6220-00-660-5539
NSN 5905-01-011-7970
NSN 6240-01-648-3674
NSN 6610-01-609-4151
NSN 5998-00-008-8954
NSN 5895-01-543-8477
NSN 5960-01-371-9143
NSN 6610-01-577-8685
NSN 5915-00-244-1702
NSN 6620-01-503-0817
NSN 7035-01-238-9301