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 5990-01-458-9576
NSN 2925-01-243-7736
NSN 4140-01-206-4832
NSN 5915-01-089-7930
NSN 6685-01-601-4127
NSN 6240-01-037-7108
NSN 6130-01-107-3279
NSN 6650-01-418-0790
NSN 6620-01-091-8413
NSN 5950-00-408-5263
NSN 6110-01-388-2389
NSN 6240-01-321-5168