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 6220-01-290-3081
NSN 6145-01-197-8488
NSN 5950-01-503-9805
NSN 5999-00-260-0471
NSN 5835-01-142-9233
NSN 5996-01-588-5050
NSN 5855-01-323-5394
NSN 6110-01-198-6154
NSN 5925-01-417-6618
NSN 6220-01-563-1388
NSN 4140-01-025-9699
NSN 5975-01-444-2406