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 5855-01-464-5084
NSN 4140-01-540-1969
NSN 6650-01-410-8542
NSN 5996-01-381-1316
NSN 5910-01-472-2564
NSN 5950-01-417-4730
NSN 6610-00-251-7073
NSN 5960-01-406-0299
NSN 5950-01-595-7627
NSN 5999-00-419-0244
NSN 5998-01-370-3176
NSN 5925-01-449-1078