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 5998-01-579-1798
NSN 5895-00-558-9032
NSN 5996-01-521-6988
NSN 6610-01-645-7515
NSN 6105-01-399-8140
NSN 6150-00-553-1047
NSN 5930-00-341-2903
NSN 6135-00-134-6648
NSN 5999-01-511-0417
NSN 5910-00-487-5858
NSN 5990-00-811-3275
NSN 6650-01-584-4359