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 5915-01-333-1280
NSN 5915-01-020-6171
NSN 5998-01-411-5941
NSN 5950-01-519-0731
NSN 5985-01-142-5534
NSN 5895-01-197-2930
NSN 5996-00-056-4453
NSN 6145-01-573-5891
NSN 5925-01-467-9910
NSN 5910-00-191-3564
NSN 4140-01-078-6520
NSN 5960-01-398-4883