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 5920-01-649-3942
NSN 6145-01-220-7398
NSN 2925-01-253-6006
NSN 6110-00-147-3149
NSN 5935-01-200-7948
NSN 5935-01-596-9293
NSN 6610-01-197-5249
NSN 6610-01-657-5532
NSN 5999-01-210-4568
NSN 5998-01-140-9109
NSN 6320-01-458-9567
NSN 6135-00-134-6648