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 5998-01-206-4672
NSN 5998-01-024-3194
NSN 5960-01-170-4057
NSN 5895-00-707-6663
NSN 5930-00-336-9401
NSN 5855-00-610-4052
NSN 5990-01-472-2447
NSN 6240-01-520-3390
NSN 5996-01-286-2375
NSN 5895-01-222-2614
NSN 5950-00-079-1273
NSN 5975-01-320-6007