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 5835-01-657-0245
NSN 6620-01-365-1499
NSN 5990-01-462-1617
NSN 6105-00-807-7619
NSN 5905-00-831-1588
NSN 5965-01-314-7165
NSN 7035-01-420-5404
NSN 6650-01-463-2274
NSN 5930-01-357-7069
NSN 5910-01-223-7689
NSN 6135-00-299-6918
NSN 7035-01-489-5679