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Thurmalox High-Temp Silicone Caulk

Thurmalox 2655 High-Temp Silicone Caulk is a one-part, room temperature silicone adhesive/sealant for high-temperature industrial applications.

Thurmalox 2655 is a one-part, room temperature vulcanizing (RTV) silicone adhesive/sealant for high-temperature industrial applications. It cures to a tough, elastomeric rubber upon exposure to atmospheric moisture and retains permanent flexibility from -80F to 550F (-62C-288C) and will withstand intermittent exposures to 650F (343C).

Related Information

Recommended Uses:

Thurmalox 2655 Adhesive/Sealant provides excellent adhesion to most surfaces including: metals, painted surfaces, ceramics, glass, rubber and plastics.

Typical applications include:

  • Sealing hot surfaces of air pollution control equipment to prevent acid dew point corrosion caused by in-leakage of moist ambient air
  • For baghouses, precipitators, access doors, expansion joints, vent and flue connections, duct work, damper seals and test ports
  • Fired heaters, boilers, ovens, windows 
  • Prevention of dust and dirt contamination of electrical controls, instruments and motors 
  • Stoves, fireplace inserts and flue pipes 
  • Formed-in-place gaskets around pipes, valves, process equipment and tanks containing hot liquids 
  • Formed-in-place gaskets for compressors, pumps, engines, gear boxes and other machinery
  • Features 100% silicone rubber 
  • Outstanding thermal stability over a wide service temperature range 
  • Retains permanent flexibility under stress by heat, radiation and weather
  • Unaffected by weather, moisture, UV radiation and ozone 
  • Highly resistant to chemical attack
  • Excellent unprimed adhesion to many materials 
  • Will not sag, slump or run upon application
  • Excellent dielectric and insulation properties