Dow 12-Ounce Expanding Foam Sealant

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12-Ounce Expanding Foam Sealant


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* Estimated stock levels as of Wed, Mar 22, 2023. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.


Used primarily for sealing penetrations and air leaks in the building envelope. Fills cracks, gaps and holes. Not recommended for use around doors and windows. Permanent, rigid, non-shrinking, waterproof/water resistant. Sandable, paintable, moldable. Straw applicator allows for rapid, yet precise, controlled flow. Adheres to wood, masonry, glass and most plastics. Can be dispensed at any angle. Closed cell for blocking radon gas and air infiltration. Expands approximately 60-percent during cure. 15 minute tack-free time; 1 hour cure time. Flammable during dispensing. U.L. Listed. For outside applications paint when cured to protect against UV discoloration. 240° Fahrenheit max temperature for cured foam. 12 oz yields 275 linear feet in 3/8 in bead; 20 oz yields 460 linear feet in 3/8 in bead.



Color Yellow
Compositions Polymethylenepolyphenylisocyanate Propoxylated Glycerin Polymer Diphenylmethane Diisocyanate Isomers Homologues Polymethylenepolyphenyl Polyisocyanate Polypropyleneglycol Co-Polymer Tris(1-Chloro-2-Propyl) Phosphate Paraffin Waxes Hydrocarbon Waxes Chlorinated Isobutane 4 4-Methylenediphenyl Diisocyanate 1 Methyl Ether Propane
Coverage 275 ft Linear At A 3/8 in Bead
Flash Point -155° F
Form Foam
Odor/Scent Mild
Packing Type Aerosol Can
Specific Gravity 106
Type Foam Sealant

Manufacturing Details
The following information is subject to change without notice

Certification, Codes, Standards UL Listed
Country of Origin US
Shop USA Yes


Size 12 oz

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