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 5996-00-902-7394
NSN 5960-01-649-1341
NSN 6105-01-322-4613
NSN 5975-01-436-3622
NSN 6150-01-237-4898
NSN 5950-01-252-3808
NSN 5915-00-017-8865
NSN 4140-01-362-9023
NSN 5935-01-364-0161
NSN 6240-01-245-2291
NSN 6135-01-222-0703
NSN 5990-00-043-4048