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 6320-01-450-7083
NSN 6105-01-634-0322
NSN 6150-00-244-2664
NSN 6150-01-455-3573
NSN 6240-01-245-8996
NSN 5975-01-645-5729
NSN 5950-01-616-5609
NSN 5905-00-115-3611
NSN 5998-01-611-7826
NSN 4140-00-761-7761
NSN 6240-01-359-7230
NSN 5975-00-413-4428