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 steam turbines
NSN 4140-01-633-6618
NSN 6135-01-151-2705
NSN 5965-00-901-6203
NSN 6145-00-435-4013
NSN 5915-01-468-0053
NSN 5945-00-282-3181
NSN 5910-01-382-9288
NSN 5950-01-406-4603
NSN 5950-01-495-7921
NSN 4140-01-375-8072
NSN 5905-00-248-6394
NSN 6150-01-420-1740