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 5945-01-603-2008
NSN 5975-00-197-9762
NSN 7035-00-173-2281
NSN 5895-00-270-0949
NSN 5999-00-958-9261
NSN 6240-00-633-1243
NSN 5975-00-387-6515
NSN 6110-00-135-0878
NSN 6610-00-960-9135
NSN 5835-01-442-6079
NSN 6135-01-101-5039
NSN 5960-00-650-7476