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 6650-01-186-2426
NSN 5965-01-495-1170
NSN 5925-01-068-0793
NSN 6130-00-956-3963
NSN 5985-01-358-1362
NSN 5930-01-652-5045
NSN 5945-00-090-9763
NSN 5950-00-959-3952
NSN 5895-01-152-1947
NSN 6610-00-489-9730
NSN 5930-01-389-2630
NSN 5935-01-220-8981