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 6220-00-258-2967
NSN 6105-01-371-3045
NSN 6240-01-399-0343
NSN 6645-01-492-9823
NSN 2925-01-379-0903
NSN 6240-01-268-0409
NSN 6105-01-530-2191
NSN 6220-01-508-5299
NSN 5945-00-509-2932
NSN 5925-00-924-6296
NSN 6645-01-510-3496
NSN 6135-01-526-3227