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 6135-00-209-6918
NSN 2925-00-019-9649
NSN 6110-01-158-7037
NSN 5920-00-064-3523
NSN 5999-01-483-0651
NSN 5999-00-943-9447
NSN 5910-01-213-0762
NSN 4140-01-148-7854
NSN 6105-01-492-4471
NSN 6645-00-451-6462
NSN 6320-01-567-7198
NSN 5996-00-722-4944