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 6110-01-481-8909
NSN 5895-01-459-2775
NSN 5920-00-800-8998
NSN 5999-00-901-5738
NSN 5895-01-456-4123
NSN 5985-01-148-7866
NSN 2925-00-290-7052
NSN 6240-00-968-9274
NSN 5950-00-583-1411
NSN 5915-00-169-7940
NSN 7035-01-537-7301
NSN 5895-01-122-0296