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 7035-01-431-1448
NSN 6240-00-081-4561
NSN 5945-00-788-3269
NSN 6685-00-408-6886
NSN 5915-01-013-8995
NSN 5990-01-181-4143
NSN 5905-00-841-6633
NSN 6110-01-394-5302
NSN 5935-00-548-5440
NSN 5998-01-645-4803
NSN 5910-00-446-1957
NSN 6135-01-633-8502