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 6620-01-517-0014
NSN 7035-01-023-7859
NSN 6110-01-503-0450
NSN 7035-00-465-3298
NSN 5990-00-153-0055
NSN 5925-00-081-1170
NSN 5985-01-502-7220
NSN 6135-01-310-9866
NSN 5920-01-018-4152
NSN 5960-00-026-3142
NSN 6320-00-228-5678
NSN 5998-01-125-4328