NORMOUNTÂ® Acrylic A3304GB is a 16 mil, acrylic system that provides fast adhesive strength to bond a wide range of substrates. The all-acrylic construction is compatible with most plastics and painted surfaces and has excellent weathering properties. It is engineered to absorb the stresses of normal joint movement, providing for enhanced adhesion performance. Unlike mechanical fasteners that concentrate the joint stress in one location, it will distribute stress throughout the entire bond area. This results in higher bond strength, especially in joints of high movement (e.g. truck side panels) and different thermal expansion and contraction (dissimilar substrates).