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 6620-01-513-1996
NSN 6240-01-094-7717
NSN 5985-01-049-5969
NSN 6620-00-151-5363
NSN 6240-00-756-5149
NSN 5915-00-053-4369
NSN 6645-01-099-0249
NSN 5915-01-100-3652
NSN 5999-00-006-4512
NSN 5935-01-319-0707
NSN 5985-01-493-4867
NSN 5985-01-472-2037