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 6135-01-278-9717
NSN 5910-01-489-0966
NSN 6650-01-514-0240
NSN 5996-01-198-0117
NSN 5895-00-448-1689
NSN 5930-01-159-5781
NSN 5965-01-438-0647
NSN 5930-01-519-2322
NSN 5895-01-478-5921
NSN 5920-01-389-8258
NSN 5960-01-278-9394
NSN 6145-00-141-8095