tesa® HAF 8405 is a double-sided thermosetting brown adhesive film without backing, that is based on phenolic resin and nitrile rubber. At room temperature tesa® HAF 8405 is not tacky. It is activated for pre-lamination by heat and becomes tacky at 194 °F. In its application, heat and pressure is applied over a certain period of time. After curing, tesa® HAF 8405 reaches a very high bonding strength, high temperature stability and excellent chemical resistance. Because of the rubber components tesa® HAF 8405 remains flexible and elastic. tesa® HAF 8405 is supplied with a strong paper liner and can easily be slit and die cut.