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 6645-01-249-3258
NSN 5950-00-627-8578
NSN 5935-01-356-8051
NSN 7035-00-703-3535
NSN 2925-01-146-0278
NSN 6320-01-102-0799
NSN 6610-01-466-9985
NSN 5930-00-467-6223
NSN 5996-00-518-0460
NSN 6110-01-407-5706
NSN 5915-01-377-3545
NSN 6650-00-273-8732