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Silicone Caulk, High Temperature Caulk, High Temperature Sealant
Silicone Caulk, High Temperature Caulk, High Temperature Sealant Silicone Caulk, High Temperature Caulk, High Temperature Sealant
Silicone Caulk, High Temperature Caulk, High Temperature Sealant

Thurmalox 2655 Silicone Caulk / Sealant 550F(288C) brochure (PDF)

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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).

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


See other Dampney Products.

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