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 5910-00-916-8071
NSN 5905-00-722-1167
NSN 5920-00-898-3090
NSN 6145-01-527-2528
NSN 5950-01-516-6846
NSN 5985-01-090-6998
NSN 5935-01-587-0767
NSN 6105-01-458-7841
NSN 5910-01-659-7587
NSN 5925-00-136-0977
NSN 6110-00-702-4563
NSN 5960-01-089-8155