3M™ VHB™ Tape 4611F 3M™ 3M™ VHB™ 4611F is a dark gray, double-sided acrylic foam tape with high temperature resistance. It is specifically engineered for bonding metal substrates prior to heat-curing processes, such as powder coating, withstanding temperatures up to 230°C for short periods. Its viscoelastic properties allow it to absorb energy and compensate for differential thermal expansion, providing a durable and aesthetically pleasing alternative to mechanical fasteners like rivets or welds. Learn more