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 5935-01-167-8934
NSN 5925-01-047-2281
NSN 5915-00-881-1398
NSN 5905-01-043-5677
NSN 6130-00-081-1039
NSN 6685-01-047-1479
NSN 4140-00-243-6664
NSN 5960-01-157-7009
NSN 6130-01-067-9383
NSN 6220-01-583-5914
NSN 5990-01-529-7307
NSN 5975-01-532-4978