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 6130-01-479-8474
NSN 6650-00-406-2645
NSN 6130-01-511-6232
NSN 5965-00-139-4870
NSN 5905-00-446-9083
NSN 5915-01-422-5494
NSN 2925-01-448-2880
NSN 6610-01-072-1849
NSN 7035-01-443-3052
NSN 5945-00-561-1396
NSN 5905-01-115-9234
NSN 6620-01-085-8688