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 5935-01-053-0208
NSN 7035-01-362-4924
NSN 5950-01-217-1287
NSN 6110-01-186-3867
NSN 5998-01-517-7448
NSN 5910-00-512-9192
NSN 5990-01-619-6446
NSN 5998-01-062-3578
NSN 5990-01-168-6797
NSN 6610-00-225-9886
NSN 6130-00-335-9712
NSN 5965-01-068-2714