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 5945-01-268-6865
NSN 5920-00-298-0700
NSN 5960-00-140-9583
NSN 5935-01-440-9404
NSN 6105-01-117-2486
NSN 5855-00-631-4565
NSN 6320-01-631-7828
NSN 5910-01-020-7700
NSN 6320-00-432-2772
NSN 6110-01-535-6972
NSN 6320-01-203-4303
NSN 4140-01-623-8896