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 5990-00-469-4847
NSN 6220-00-171-8638
NSN 6610-01-003-9763
NSN 5910-01-622-5674
NSN 6320-00-405-2348
NSN 6650-01-447-2858
NSN 5920-01-064-7370
NSN 5945-01-145-5488
NSN 5945-01-102-8868
NSN 6110-00-727-3691
NSN 7035-00-009-0099
NSN 5910-01-046-4984