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 5905-00-013-7598
NSN 6620-00-596-1951
NSN 5895-00-205-2924
NSN 6240-00-829-4179
NSN 5920-01-091-7759
NSN 6320-00-224-3538
NSN 4140-00-920-3343
NSN 6135-00-557-8874
NSN 5990-00-242-3754
NSN 6610-01-608-5285
NSN 6145-00-240-4532
NSN 5996-01-014-1703