unbalanced, inside mounted, bellows seal Applicable working condition1,Seal size (mm) : 702,Medium: potassium carbonate3, ... Weld metal bellows component is welded by bellows and bellows seat and sealing ring seat.It’s sealing ring with excellent floatability . Bellows ... ,Imported material is widely used in manufacturing mechanical seals2,Direct factory price3,Professional technical services4, ...