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 5998-01-268-0369
NSN 6110-01-224-4858
NSN 4140-01-268-2429
NSN 5945-01-616-3217
NSN 5950-01-069-9844
NSN 5990-01-212-2037
NSN 5895-00-734-5401
NSN 5915-01-614-7157
NSN 5999-00-483-2098
NSN 6145-01-281-2612
NSN 5998-00-157-0804
NSN 6130-01-574-9698