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 6220-01-416-6324
NSN 5925-00-284-3726
NSN 5930-01-484-4362
NSN 7035-00-142-9076
NSN 6620-00-724-1268
NSN 5920-00-827-1094
NSN 5835-00-807-5632
NSN 6110-00-929-1217
NSN 5998-01-513-0864
NSN 6620-01-401-5356
NSN 6145-01-645-3520
NSN 5855-01-147-6024