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 5998-00-633-0572
NSN 5835-00-460-5750
NSN 6130-00-481-4449
NSN 5998-01-059-4849
NSN 6105-00-811-1990
NSN 5895-00-617-0029
NSN 5999-00-849-2795
NSN 5915-01-523-3506
NSN 5990-01-552-5386
NSN 5930-01-298-0792
NSN 5996-01-176-7275
NSN 6220-01-384-3879