Dream, design, deliver with 3M™ VHB™ Tape 4646. It is a dark grey, 25 mil (0.6 mm), general purpose adhesive with firm foam that has the added feature of high temperature resistance. 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.3M VHB Tape 4646 is in the 4611 family of 3M VHB Tapes. These tapes utilize general purpose adhesive on both sides of firm foam. High temperature capability makes this family often suitable for bonding prior to high temperature paint processing. It is typically used on metal substrates such as aluminum, galvanized steel, and stainless steel. Applications for this tape include stiffener and panel attachment, including assembly before paint ovens, as well as decorative material and trim.