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 5998-01-645-7689
NSN 5915-00-217-1922
NSN 6105-01-345-6425
NSN 6135-01-351-2690
NSN 5996-00-407-3003
NSN 5920-00-024-0127
NSN 5855-01-428-9456
NSN 5998-00-277-7552
NSN 5895-01-426-4809
NSN 5990-00-518-0684
NSN 5945-00-639-9848
NSN 6240-01-388-2261