3M™ Scotch-Weld™ DP-601 is a non-sag, gray, rapid-setting, two-component polyurethane adhesive. 3M™ Scotch-Weld™ DP-601 is a non-sag, gray, rapid-setting, two-component polyurethane adhesive. It is packaged as 1:1 ratio liquids in duo-pak cartridges. With the Squeeze of the trigger, the components are automatically mixed and easily dispensed