3M(TM) Scotch-Weld(TM) Epoxy Adhesive 1838 is a rigid, two-part epoxy adhesive. 4:5 mix ratio, 60 minute work life and handling strength in approximately 8 hours. This kit contains 4/5 qt. of part B and 1 qt of part A 3M(TM) Scotch-Weld(TM) Epoxy Adhesive 1838 adhesive that cures at room temperature. Bonds metals, wood, reinforced plastics and masonry.