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 6135-01-090-5365
NSN 6220-01-589-6532
NSN 6620-01-062-7163
NSN 6645-01-256-3375
NSN 5965-01-136-1553
NSN 6320-01-313-8306
NSN 5945-01-225-3355
NSN 5935-01-564-0931
NSN 5985-00-874-2162
NSN 4140-00-413-0877
NSN 4140-01-418-1664
NSN 7035-00-235-3529