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 5945-01-430-2222
NSN 5996-01-343-9962
NSN 6650-00-202-4540
NSN 5945-01-506-7270
NSN 5835-00-733-9145
NSN 5996-00-230-5550
NSN 5920-01-544-4231
NSN 6130-01-060-5671
NSN 5915-01-380-3228
NSN 6150-01-085-5858
NSN 6320-01-466-4175
NSN 5999-01-455-9402