Heavy Duty environmentally friendly adhesive/sealant that bonds to most common building materials for general, all-purpose adhesion and sealing. Quick grabbing with a tack free time of 20 minutes. Strong (400 psi shear strength, 450 psi tensile strength) and flexible (550% elongation). Low VOC, no/low odor and 100% waterproof. Approved for both indoor and outdoor usage. Cures fully submerged. ECO-BOND Adhesives requires the use of a caulk gun for application. For best results cut the top of the tube at a 45 angle. Insert opening rod into newly cut tube end and puncture the inner foil seal. For best results, once the seal has been punctured, use the opening rod to widen the inner puncture hole.