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 4140-01-398-9118
NSN 5855-01-334-6594
NSN 4140-01-650-1208
NSN 5930-00-216-7511
NSN 5835-01-327-6324
NSN 5999-01-260-3746
NSN 5998-01-254-0675
NSN 5996-01-505-0101
NSN 5985-01-643-9861
NSN 7035-01-435-7962
NSN 6145-01-049-2360
NSN 5945-01-189-1874