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 5975-00-504-6751
NSN 5975-00-404-1034
NSN 6220-01-057-3654
NSN 6320-00-456-2092
NSN 5999-00-116-7528
NSN 5999-01-573-1954
NSN 5925-01-389-6779
NSN 6240-01-573-3316
NSN 6220-01-633-3509
NSN 5835-01-158-6878
NSN 6685-00-977-6477
NSN 6620-00-871-0592