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 6610-01-593-0135
NSN 5975-01-096-6270
NSN 6150-00-840-3674
NSN 6620-00-522-6693
NSN 6650-00-287-5868
NSN 5950-01-643-5511
NSN 5965-01-486-3564
NSN 5855-01-095-5299
NSN 6240-01-359-6024
NSN 6650-00-231-2744
NSN 5920-01-211-5557
NSN 6150-00-617-1989