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 6620-01-192-0543
NSN 6105-01-456-1243
NSN 5960-01-512-0233
NSN 5905-01-429-1256
NSN 6650-01-113-7563
NSN 5999-00-141-9441
NSN 5925-00-223-1842
NSN 5925-00-815-8646
NSN 6150-00-067-0145
NSN 5950-01-058-9295
NSN 5835-01-491-4613
NSN 5930-01-053-9703