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 6220-01-272-3177
NSN 6610-00-267-9944
NSN 5920-00-149-0013
NSN 5855-01-359-5727
NSN 6145-01-634-0388
NSN 5855-01-258-5161
NSN 5996-01-013-8824
NSN 5990-00-010-8186
NSN 5925-00-286-4667
NSN 6620-01-274-2512
NSN 5835-00-647-2104
NSN 5975-01-315-9586