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 6620-01-355-4339
NSN 6150-01-449-5200
NSN 5920-01-516-3343
NSN 5910-01-340-5659
NSN 6650-01-498-2633
NSN 6135-01-581-8843
NSN 4140-01-510-6081
NSN 6650-00-684-3060
NSN 6135-00-027-3914
NSN 5996-01-139-2843
NSN 5996-01-627-7593
NSN 6130-01-526-2056