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 5935-00-628-6510
NSN 5855-00-055-1579
NSN 6130-01-021-0759
NSN 6220-00-809-6071
NSN 6610-00-899-6642
NSN 5910-01-442-1750
NSN 5930-01-067-6422
NSN 6320-01-462-2295
NSN 6645-00-679-8203
NSN 5945-01-295-3583
NSN 5998-01-652-4522
NSN 5999-00-514-3388