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 5999-01-634-0576
NSN 5960-00-938-7569
NSN 5935-01-478-3682
NSN 5915-01-208-6494
NSN 6135-00-898-6996
NSN 5975-00-055-7277
NSN 5960-00-815-6072
NSN 6145-00-635-4695
NSN 6240-00-904-2122
NSN 6240-01-619-5774
NSN 5985-00-111-1605
NSN 5935-01-447-2755