The special 3M 94 Primer is used before applying double-sided adhesive tapes on low surface energy (LSE) materials, where it enhances the adhesion of the tapes. It can also be used before applying double-sided adhesive tapes on glass if the bonded joint will be exposed to extreme humidity. Instructions for use: Press the ampoule in the middle in the direction of the arrows (see small image).), to release the contents of the container in the ampoule. Hold the vial vertically and apply a uniform thin layer of primer to the thoroughly cleaned and degreased bonded surface. Do not squeeze the ampoule again. Let the primer dry for about 5 minutes and apply the tape. Technical specifications system: solvent-based base: acrylic polymer temperature resistance: 90 °C UV resistance: excellent moisture resistance: excellent chemical resistance: excellent application: painting