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 5835-01-521-4979
NSN 6145-00-816-6166
NSN 5855-00-444-2298
NSN 5935-00-001-8472
NSN 5920-01-336-2259
NSN 6610-01-586-3181
NSN 5999-00-281-1021
NSN 5895-00-832-0726
NSN 5895-01-067-7957
NSN 6145-00-286-9588
NSN 5950-01-394-7230
NSN 6610-01-487-4626