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 5960-01-007-6811
NSN 5930-01-181-4275
NSN 5996-00-727-8664
NSN 5920-01-258-5775
NSN 6645-01-251-7887
NSN 6645-01-633-1852
NSN 6135-00-635-9187
NSN 5975-00-762-2719
NSN 6135-01-341-9814
NSN 5920-00-203-5938
NSN 6685-01-510-3891
NSN 5905-00-796-3012