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Internet #202907021

Model #AC-DMS 0.5

Store SO SKU #1000682558

1/2 Gal. Water Base Duct Mastic Sealant

  • Features a weather-resistant design
  • Specifically designed for easy application
  • Suitable for use with fiberglass and flexible air ducts
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Product Details

Speedi-Products Low to high Velocity Air Duct sealant. Non Toxic adhesive sealant. Used for permanently sealing sheet metal and flexible duct system joints. UL-181 listed rigid fiberglass and flexible air ducts. Water based non flammable fire and weather resistant. Easy application and clean up.
  • Low to high velocity air duct sealant
  • Used for permanently sealing sheet metal and flexible duct system joints
  • UL-181 listed rigid fiberglass and flexible air ducts
  • Water based non flammable fire and weather resistant
  • Easy application and clean up
  • Consult your local building codes for approved installation practices
  • Return Policy

Additional Resources

From the Manufacturer

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Specifications

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Questions & Answers

35Questions
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Q:Can u get a respiratory infection from breathing this?
by|Jan 13, 2021
1 Answer
Answer This Question

A:  See the Safety Data Sheet(SDS) on the web page under Info & Guides. Unknown if you can get an infection but it can cause irritation to the respiratory system.

by|Jan 14, 2021
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    Q:Can this be painted. I want to paint my basement ceiling after I seal all the ductwork
    by|Nov 4, 2020
    1 Answer
    Answer This Question

    A:  Yes, the mastic is water based and can be painted.

    by|Nov 6, 2020
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      Q:Can this be used for exterior applications
      by|Mar 9, 2020
      2 Answers
      Answer This Question

      A:  The product is water soluble. So it can only be used outdoors where it will be protected from moisture.

      by|Dec 20, 2021

        A:  Yes, it can be used for exterior applications.

        by|Mar 10, 2020
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          Q:Can this product be used directly on flexible duct to seal where it enters main trunk line?
          by|Jan 23, 2020
          1 Answer
          Answer This Question

          A:  Yes, refer to Instructions in the Product Overview section of web page. Secure flex duct per manufacturers instruction, then apply 2" band 20-40 mils thick to seal the connection.

          by|Feb 24, 2021
            1 found this answer helpful
            Showing 1-4 of 35
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            Customer Reviews

            4.7 out of 5
            (40)
            • 4.7
              out of 40 reviews
            • 95%recommend this product
            Filter by:
            Showing 1-10 of 40 reviews
            Good for sealing drafty windows!
            The casings around our windows were very poorly sealed. This caused numerous drafts in our house. After taking the casings apart, I discovered large gaps between various construction materials around the windows. So, I bought this bucket of sealant to fill the gaps. This stuff is awesome. Just use a regular spackle knife to spread it over anything! The sealant is thick, so it doesn't drip or run through cracks. It fully-fully cured after 48 hours near the drafty windows in the winter. I attached before and after pictures. Nice!
            by
            • DIY
            • Recommended
            21 found this review helpful
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              • Verified Purchase
              Rating provided by a verified purchaser...
              Rating provided by a verified purchaser
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              • Verified Purchase
              Easy to work with. Sealed very well. Air quality in...
              Easy to work with. Sealed very well. Air quality in house is much better now.
              by
              • Verified Purchase
              1 found this review helpful
              Super easy application for rewrapping of HVAC ductwork sealing. ...
              Super easy application for rewrapping of HVAC ductwork sealing. Just paint it on!!
              by
              • Verified Purchase
              2 found this review helpful
              Rating provided by a verified purchaser...
              Rating provided by a verified purchaser
              by
              • Verified Purchase
              Worked as described...
              Worked as described
              by
              • Verified Purchase
              Easy to use and easy clean up. Great stuff....
              Easy to use and easy clean up. Great stuff.
              by
              • Verified Purchase
              I haven’t yet had a chance to tackle that project...
              I haven’t yet had a chance to tackle that project but it’s coming up and with any luck I’ll be able to update this rating.
              by
              • Verified Purchase
              Showing 1-10 of 40 reviews

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