KHIA headerKnow-How in Action


Belzona Elastomers Seal Sf6 Gas Leaks At Hydroelectric Facility



Power (POWR)


Áreas Know-How:

Gaskets, Seals and Shims (GSS)


Cliente / ubicación:

Hydroelectric Facility, BC


Fecha de aplicación:



Situación de aplicación:

Leaking joints Gas Insulated Switchgear (GIS)



The constant leakage of Sulphur Hexafluride gas (SF6) was considered to be a major environmental problem being 25,000 times as effective a "greenhouse gas" as CO2. System is pressurized to 45 psi.



Belzona® 2211 (MP Hi-Build Elastomer)

Belzona® 2221 (MP Fluid Elastomer)

Belzona® 1321 (Ceramic S Metal)



Various metal substrates


Método de aplicación:

Application was carried out in accordance with Belzona Know-How System Leaflet GSS-4. Pinholes in welds were coated with Belzona® 1321. Flanged joints were sealed with Elastomer using a combination of brush application and injection.


Hechos Belzona:

The Belzona materials applied in 1993 have proven completely effective with joints and welds sealed with Belzona materials remaining sealed for well over a decade now. SF6 consumption has dropped from over 50 bottles per year, to a mere two or three bottles—a saving in excess of $1 million over the decade. Most importantly losses of SF6 into the atmosphere have been minimized, drastically reducing the environmental impact.


Descripciones de fotografías

  1. Belzona® 2211 MP Hi-Build in the process of being injected into the gap between the two flanges
  2. Another variation of a similar application
  3. Another flange sealed
Case study pic one


 Case study pic two


 Case study pic three




Para obtener más información acerca de los productos Belzona visite: