Wärtsilä Pumpguard Water WFS M Seals

Offering broad, global coverage for larger pump applications in either industrial or conventional power generation installations. Derived from a marine shaft seal, it is trusted in both commercial and defence vessels, and a vast installed base running into thousands. 

A long product life matching the operational profile of the plants where it is installed. Some installations have been running for over 3 decades.  Typically these wrapped bellows seals are installed on cooling pumps on thermal and nuclear power plant but have a wide application in pump operation alongside an extensive marine base.

Available as fully split [for ease of maintenance and installation/disassembly] or non-split variants, they are custom designed for each installation, either for new builds or to retrofit to an existing installation.  Fully split versions allow rapid change out of replacement components and reduced downtime associated with major maintenance routines.  Furthermore, the sealing forces in these balanced seals are maintained by a unique and robust coated omega spring arrangement.

Versatile in its application and performance, it has the broadest capability of any seal type currently available from Wärtsilä, offered with field service support capability.

Various applications in industrial, water management and power generation installations
Primarily associated with large pumps

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