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 2925-00-928-5931
NSN 5996-01-518-9868
NSN 5990-01-430-4651
NSN 6130-00-116-8170
NSN 5960-00-988-2576
NSN 6610-01-171-3010
NSN 6620-00-656-5799
NSN 2925-01-100-3694
NSN 5990-00-782-7206
NSN 5895-01-056-4548
NSN 5915-01-503-4246
NSN 5905-01-487-7452