MIRACLE-Kingco D-619 is a water-based duct sealant/mastic specifically formulated for indoor and outdoor use on conventional heating and air conditioning duct systems. D-619 exhibits excellent strength, flexibility and resistance to heat and cold. D-619 is highly resistant to mold, mildew, aging, water, and extreme temperature ranges. D-619 also provides strong resistance to oil and grease.

• 10.5 oz Tube Gray
• 1 Gal Can Gray
• 2 Gal Can Gray