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 6320-00-228-5678
NSN 6150-01-180-5217
NSN 6650-01-579-3855
NSN 5910-00-916-3986
NSN 7035-01-476-7787
NSN 6135-01-236-8603
NSN 6610-01-119-3048
NSN 5960-01-282-1111
NSN 7035-01-116-6223
NSN 6650-01-137-7450
NSN 5985-01-442-7661
NSN 4140-00-146-3269