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 5920-01-067-2289
NSN 5895-01-286-5502
NSN 6650-00-458-7586
NSN 5895-00-772-5947
NSN 6220-01-553-1480
NSN 6145-01-519-8210
NSN 5905-01-123-1960
NSN 5935-00-670-4043
NSN 6320-01-359-3921
NSN 6220-01-336-3534
NSN 5915-01-268-7328
NSN 5960-01-056-4982