Back-to-Back seals on CR pumps from Grundfos – explained

Description: A Grundfos CR multistage, inline pump with Back-to-Back Seals is for applications that require handling the following: toxic, aggressive or flammable liquids, where no leakage to the atmosphere can be accepted; or abrasive or sticky liquids, which can either wear out, damage or block a mechanical shaft seal. A back-to-back seal describes two shaft seals mounted back-to-back to provide a higher level of safety and reliability.

Our application manager, Peter Ørsted, guides you through this solution, taking it apart and showing how the Back-to-Back seals work and why Grundfos designed the solution that way.

A back-to-back double seal protects the people working in the vicinity of the pump and the surrounding environment. It is designed for operating pressures up to 25 bar and 120°C with the aim of minimising the risk of leakage from the pump to the environment.

For more information on sizes, materials, data booklets, service manuals, etc., please visit the Grundfos CR family page in Grundfos Product Center:
https://product-selection.grundfos.co...