Sealant is BLACK but dries a charcoal color!

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High Temperature M230 Sealant Caulking Cartridge

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Price in points: 249 points

Our M230 High Temp Sealant is an easy-to-use sealant for all aspects of maintenance and installation of pellet stoves or gas-burning systems. Versatile enough to seal metal flues for wood and coal burning stoves without encouraging rust, or to serve as an all-in-one solution for an effective door gasket adhesive and sealant--all with easy application with the 10.1 fluid ounce caulking cartridge! While this sealant is capable of resisting intermittent peak temperatures of 1100°F, it is designed for use with a continuous operating temperature of 900°F. Quickly air dries and cures with heat at 200°F for approximately 1.5 hours. This wood stove pipe sealant is black, but turns a charcoal color when completely dry and can be covered with high temperature paints to perfectly match any surface. 

  • Preparation:

    • Please be sure to wear rubber gloves and eye protection during application of this product. Protect your work area from accidental spills with a tarp or drop cloth. Thoroughly remove all debris and foreign matter from the surface to be sealed.
  • To use:
    • Insert cartridge in the caulking gun and cut the tip at an angle to desired diameter (1/8"). Lay a bead and drag the material at a 45° angle in desired area
    • Allow material to air dry.
    • Heat cure at 200°F for approximately 1.5 hours.

How to caulk like  pro!Silicone & Caulking Tips: DiY like a Pro!

  1. Product cartridge fits into a standard caulking gun. For clean application, cut the cartridge tip near the end, at an approximate 45° angle.
  2. Ensure that the working surface is clean, dry, and free of debris. Have some damp cloths or a roll of paper towels within reach. Lay down newspaper to protect carpet/flooring from possible drips.
  3. To lay a professional bead, hold the caulking gun at 45°. Spin the cartridge tube so the longest part of your tip is aligned with the top side of the caulking gun.
  4. Beginning at the highest point of your working area, slowly and gently squeeze the trigger and drag the gun to lay an even bead (about 1/8"). 
  5. For a clean job, remember that "A little goes a long way!" Try to be consistent when laying a bead - you can always go back and add more material later.
  6. As you near the end of the working area, release the trigger (or press the release lever) to stop the flow of material.
  7. After applying the material, let it cure for the indicated amount of time (at room temperature) before using your appliance.

California Proposition 65California Residents: Click here for more information on Proposition 65.

Size: 10.1 fl.oz (299 mL) cartridge
Color: Black, but turns Charcoal when completely dry!
Temperature Rating: 900°F (482°C) continuous


Estimated Lead Time:

Please allow 1 week for shipping unless otherwise specified. 

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Last updated on September 1st 2021.
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