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 7035-01-220-6392
NSN 5920-01-185-2222
NSN 7035-00-360-2008
NSN 6145-01-467-5452
NSN 5835-01-442-6482
NSN 5950-01-351-5365
NSN 5975-00-257-2793
NSN 5855-01-616-8724
NSN 6240-01-376-5830
NSN 5965-01-398-9579
NSN 5998-00-823-9474
NSN 5965-01-220-0529