Series 40 & 45 are single acting metal bellow seals, specifically developed to use in Chemical, Petrochemical and Refinery process pumps for moderate temperature and pressure applications where process services require corrosion resistance.

The bellow unit eliminates the need for spring & dynamic secondary sealing element and provides flexibility to seal face in addition to compensate for seal face wear. Seal design makes it easy to repair in the field with minimum spares requirement and minimum downtime cost.

Series 40 comes with standard materials for hardware and bellow unit. While series 45 comes with higher alloy materials for both hardware and bellow unit making it suitable design for sever corrosive applications.