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 4140-01-483-8040
NSN 5998-00-564-2037
NSN 5925-01-634-0664
NSN 5925-00-235-2870
NSN 5998-01-431-5839
NSN 5996-01-146-4202
NSN 5945-01-334-2636
NSN 5895-00-241-6169
NSN 6620-01-421-3917
NSN 5990-01-465-9235
NSN 6110-01-643-1744
NSN 5935-01-545-4949