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 5920-01-361-7812
NSN 6645-01-537-6098
NSN 5895-01-398-4482
NSN 5960-01-151-0206
NSN 5999-00-847-8030
NSN 5996-00-194-8303
NSN 5996-01-345-2665
NSN 6110-01-379-2998
NSN 5910-00-815-8937
NSN 5945-01-267-1951
NSN 5998-01-574-6439
NSN 5920-00-670-4674