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 6240-01-450-9269
NSN 5985-01-032-4612
NSN 6645-00-664-4665
NSN 6650-01-262-7296
NSN 6130-01-425-1459
NSN 5925-01-591-4574
NSN 6220-00-727-3288
NSN 5920-00-226-0227
NSN 6240-01-496-3847
NSN 6240-01-502-7103
NSN 5999-01-147-4844
NSN 5915-00-212-7970