Welded bellows mechanical seal’s elastic element and isolation element are made by welded ring metal thin slice. Suitable for high temperature weIded bellows mechanical seals. A variety of material configurations, and excellent dynamic performance under abnormal working conditions.The static seal structure eliminates the influence of centrifugal force on the elastic element and is suitable for high-speed working conditions.This series of seals are suitable for centrifugal pumps and similar rotating equipment with large sealed chambers.