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 6645-01-625-1192
NSN 6110-00-696-3145
NSN 5998-01-037-9161
NSN 5985-00-008-6754
NSN 6620-00-065-3235
NSN 6110-00-244-3190
NSN 6145-01-102-8550
NSN 5975-01-427-3521
NSN 5835-01-013-9321
NSN 5960-00-186-6344
NSN 5950-01-085-1258
NSN 5910-01-430-0017