3M™ Scotch-Weld™ Epoxy Adhesive EC-3542 B/A FR is a unique adhesive formulation with low density, high torque strength and fast cure time. Using 3M glass bubble technology, this product is half the weight of traditional structural bonding adhesives for an excellent strength-to-weight ratio. The result: a product that can help substantially reduce weight in aircraft interior structures with a density of <0.7g/cc.