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Thermaguard™ CUI 650

Third generation, pure inorganic single component, ambient curing polysiloxane coating formulated specifically to provide corrosion protection to under insulation environments where wet & dry cycling can occur. Conforms to the NACE SP0198-2010 classification, inert multi polymeric matrix coatings for Corrosion Under Insulation (CUI) in both cryogenic & elevated temperature applications. Can withstand temperatures from -196 to 650ºC, exceptional resistance to thermal cycling, hot saline water immersion and chemical exposure throughout its operating temperature range. Additionally, the product can be applied in service to hot equipment operating up to 260ºC, removing the need for plant shut down periods. Comes in light grey and dark grey. At 23ºC, touch dry in 2 hours and recoating in 6-8 hours. Available in 5L pack size.




  • Exceptional temperature resistance (-196 to 650ºC temperature range)
  • High corrosion resistance
  • Superior chemical (acid) & saline resistance

Typical Applications

  • Any severe corrosive environments such as salt water immersion & acid exposure in elevated temperatures
  • Can be used in both OEM (shop application) & maintenance work
  • Petrochemical & chemical plants
  • Power, refining & generic processing plants
  • Pipelines, steamlines & pressure valves
  • Chimneys, tanks & heat exchanges


  • Waterproof/Weather Resistance
  • Heat Resistant
  • Hard Wearing & Durable
  • Corrosion Resistance
  • Chemical/Solvent Resistance
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