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 5935-00-276-9413
NSN 5990-00-983-7530
NSN 5910-00-739-3370
NSN 5920-00-761-5900
NSN 6645-01-247-4549
NSN 5930-01-537-1390
NSN 5945-00-313-9512
NSN 6105-01-168-9861
NSN 5990-01-502-8209
NSN 5925-01-463-0305
NSN 5999-01-519-7910
NSN 6240-01-401-5340