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 6130-00-151-5001
NSN 5996-00-926-7806
NSN 5960-00-914-7925
NSN 6145-01-337-5554
NSN 6320-01-476-7702
NSN 6105-01-398-1674
NSN 4140-01-609-4585
NSN 6610-00-391-7888
NSN 5999-01-090-0664
NSN 5930-01-186-4687
NSN 6320-00-242-3300
NSN 5996-00-340-5634