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 4140-01-381-0099
NSN 5930-00-472-5047
NSN 6320-00-116-3658
NSN 6110-01-563-5515
NSN 5935-01-322-7956
NSN 5950-01-265-6995
NSN 5920-01-608-4166
NSN 5996-01-444-1488
NSN 5945-01-458-7422
NSN 5935-01-518-1073
NSN 5945-01-319-8414
NSN 5975-01-391-5981