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 5915-00-003-0351
NSN 6110-00-578-7243
NSN 5925-00-081-9135
NSN 6320-00-701-0437
NSN 5835-00-733-9145
NSN 6220-01-247-9154
NSN 2925-01-556-0333
NSN 5935-00-594-7793
NSN 5998-00-369-7011
NSN 5999-01-097-2434
NSN 4140-01-251-9355
NSN 5960-01-010-3083