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 6620-01-342-5953
NSN 5950-01-025-5826
NSN 6110-00-630-1074
NSN 6240-01-522-7045
NSN 6220-01-290-4739
NSN 5930-01-079-4471
NSN 5975-00-357-4440
NSN 6650-01-320-5628
NSN 6150-01-014-9231
NSN 5985-01-384-3847
NSN 6130-01-634-0603
NSN 5930-01-571-1994