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 5998-01-179-5246
NSN 5999-01-028-4179
NSN 6150-01-042-1981
NSN 6105-01-517-2448
NSN 5895-01-241-3022
NSN 6135-00-973-5632
NSN 5950-00-236-0266
NSN 6110-01-275-5914
NSN 5920-00-895-3270
NSN 4140-01-531-3080
NSN 5998-01-244-0766
NSN 5990-01-020-6841