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 5945-01-441-7736
NSN 7035-00-703-3535
NSN 5996-00-661-1151
NSN 5930-01-122-0299
NSN 5998-01-005-0310
NSN 5835-01-125-2558
NSN 5945-00-089-1825
NSN 5985-01-463-3187
NSN 5905-01-523-3132
NSN 6135-01-445-6589
NSN 5895-00-256-3712
NSN 6620-01-322-5576