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 5855-00-149-0766
NSN 6105-00-444-4418
NSN 5950-00-760-3609
NSN 4140-01-309-5961
NSN 5925-00-843-0315
NSN 6145-01-533-1199
NSN 5998-01-612-5857
NSN 5975-01-540-4886
NSN 5960-00-878-2935
NSN 7035-00-626-1958
NSN 6320-00-646-3311
NSN 6130-01-196-8528