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 6150-01-531-0971
NSN 5835-01-219-0586
NSN 5975-00-593-6797
NSN 7035-01-382-4413
NSN 6320-01-056-1164
NSN 5998-00-539-3761
NSN 5910-00-518-4608
NSN 6105-01-164-2120
NSN 6150-01-243-1907
NSN 5998-00-406-2464
NSN 5996-00-823-8487
NSN 5905-01-429-0747