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 5945-01-580-0107
NSN 5930-00-841-1302
NSN 5985-01-327-7898
NSN 5835-01-645-2892
NSN 5855-00-198-3197
NSN 5925-01-347-3202
NSN 6220-01-356-3091
NSN 6150-00-458-3014
NSN 6220-00-218-0857
NSN 6135-01-551-0562
NSN 5895-01-063-8104
NSN 5998-00-010-0899