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 5920-00-235-8373
NSN 5925-00-809-7050
NSN 5910-01-399-0255
NSN 5945-00-676-1796
NSN 5990-00-269-2226
NSN 5905-01-394-1386
NSN 5895-01-628-9263
NSN 5998-00-263-6073
NSN 5985-01-516-7228
NSN 5855-00-610-4052
NSN 6110-01-508-4968
NSN 4140-00-225-8586