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 5945-00-617-9985
NSN 6645-01-343-1676
NSN 5996-00-521-6616
NSN 5920-00-650-6562
NSN 5905-01-300-2251
NSN 5910-00-402-1584
NSN 5895-01-067-7276
NSN 5910-00-186-9290
NSN 5990-01-658-9964
NSN 5960-01-347-6791
NSN 5960-01-142-1995
NSN 5935-01-075-3525