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 5965-01-023-9359
NSN 5855-01-079-8716
NSN 5998-01-143-7334
NSN 6145-01-652-6767
NSN 6110-01-287-5521
NSN 5990-01-557-4793
NSN 5990-00-288-1820
NSN 5910-01-044-1994
NSN 6645-01-092-4733
NSN 5895-01-359-2040
NSN 6135-00-235-1938
NSN 6105-01-423-1417