200 µm/7.9 mils amber reactive HAF mounting tape Tesa HAF® 8401 is a reactive heat activated film based on phenolic resin and nitrile rubber. This amber double sided tape has no backing. It is protected by a strong paper liner and can easily be slit and die cut. At room temperature Tesa HAF® 8401 is not tacky. It is activated for pre-lamination by heat and starts to become tacky at 90 °C/194 °F. In a second application step heat and pressure is applied over a certain period of time. After curing Tesa HAF® 8401 reaches: • Very high bonding strength • High temperature resistance • Excellent chemical resistance • Bonds remain flexible and elastic