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 5999-01-406-1331
NSN 5999-01-152-2313
NSN 5945-00-715-6507
NSN 5999-01-514-5101
NSN 4140-01-066-7883
NSN 6105-01-634-0322
NSN 5920-00-814-2328
NSN 4140-01-209-1980
NSN 5915-01-304-6915
NSN 6135-00-856-1343
NSN 5935-01-577-5089
NSN 4140-01-632-2876