3M Two Component Adhesive Sealant Applicator 400A-2K is a simple-to-use system designed to smoothly dispense an optimally mixed and accelerated polyurethane adhesive sealant. This pneumatic applicator is used with 550FC and AC63 sausage packs.For Use with 550FC + AC63 Two Component System While the curing of traditional polyurethanes relies on time and moisture, curing from the inside out, the two-component, accelerated system of our 3M Two Component Adhesive Sealant Applicator 400A-2K cures from the inside out in order to reach handling strength faster. Neither ambient moisture nor temperature is a factor, and no exothermic reaction takes place. Recommended Applications • Transportation and industrial panel bonding Bringing Better Ideas to the Surface through Science and Innovation In our 3M Industrial Adhesives and Tapes Division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.