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 5960-01-088-6553
NSN 4140-00-736-8813
NSN 5960-01-567-1096
NSN 5915-01-501-5895
NSN 5999-01-607-0486
NSN 5985-01-360-5617
NSN 6645-01-410-8905
NSN 5996-01-032-4942
NSN 5985-00-737-0494
NSN 5999-00-574-4407
NSN 5990-00-853-1123
NSN 5935-01-574-5832