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 2925-01-423-8141
NSN 5835-01-160-7282
NSN 5910-00-338-2661
NSN 6110-01-039-8607
NSN 5960-01-007-9404
NSN 6150-01-361-4808
NSN 5996-01-480-4559
NSN 5920-01-361-8835
NSN 6685-01-223-3940
NSN 6650-00-111-3399
NSN 6650-01-465-5362
NSN 5996-01-430-3960