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 6240-01-651-6714
NSN 2925-00-338-4667
NSN 4140-01-594-6862
NSN 7035-01-169-6551
NSN 6320-01-486-8004
NSN 5895-00-039-7257
NSN 5999-01-252-4403
NSN 6650-01-133-7806
NSN 5950-01-318-1155
NSN 6105-01-246-0302
NSN 5945-01-078-0368
NSN 6110-01-363-4320