Duct Sealer
Duct sealer is a dark gray,dough like mastic easily molded by hand and is designed to fill irregular openings between various materials such as metal, masonry and wood, against the entrance of water, non-hardening, non-corrosive, good adhesion to most surgaces and a temperature range of -20 degrees F to 200 degrees F. Ideal application temperatures: 60 degrees F to 90 degrees F.
Available in 1 lb or 5 lb. Sold in case qty only.