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 5998-01-273-1252
NSN 6220-01-169-4782
NSN 6620-01-417-8110
NSN 5990-01-032-3832
NSN 6220-00-480-9172
NSN 5985-01-147-7872
NSN 5835-01-346-1386
NSN 5935-01-356-3122
NSN 5960-00-460-4065
NSN 5920-00-228-4498
NSN 6240-01-633-9357
NSN 5950-01-171-6638