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 5855-00-318-7185
NSN 5915-00-539-0821
NSN 6320-01-346-5158
NSN 5895-00-827-6402
NSN 6650-01-391-8464
NSN 2925-00-652-7383
NSN 5930-00-872-4399
NSN 5915-01-533-4402
NSN 6110-01-577-9692
NSN 6110-01-390-2140
NSN 6320-01-560-7177
NSN 5835-01-062-2235