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 7035-01-325-0536
NSN 5930-00-902-3486
NSN 5965-01-603-0118
NSN 6220-01-406-3167
NSN 5990-01-400-3299
NSN 5999-00-256-1734
NSN 5999-01-448-2666
NSN 5910-01-633-9963
NSN 5996-01-571-9384
NSN 5835-01-412-0344
NSN 5990-00-936-9185
NSN 6145-01-584-3363