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 5990-00-568-4940
NSN 5996-01-091-4836
NSN 5998-00-891-7776
NSN 2925-00-856-0115
NSN 5945-01-266-1983
NSN 5990-01-517-7848
NSN 5905-01-608-3607
NSN 6650-01-272-9746
NSN 5999-01-228-7054
NSN 4140-01-484-1940
NSN 5930-01-652-5312
NSN 6105-01-545-0185