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 6320-01-304-3639
NSN 5930-00-449-4305
NSN 6130-00-538-0875
NSN 6650-01-193-8983
NSN 5975-01-494-8575
NSN 5960-00-180-8284
NSN 6650-00-901-1501
NSN 6110-00-598-2574
NSN 6110-00-464-1912
NSN 5985-00-576-0646
NSN 5965-01-248-7231
NSN 5920-01-437-5916