Dream, Design, Deliver with our 3M VHB Tape 4949. It is a black, 0.045 in (1.1 mm), general purpose acrylic adhesive with a firm foam core. It can replace rivets, welds and screws. The fast and easy to use permanent bonding method provides high strength and long-term durability. It offers design flexibility with its viscoelasticity and powerful ability to bond to a variety of surfaces.