Sika Aktivator-100 Clear 250ml Bottle [91283]Aktivator 100 Clear 250ml Bottle Transparent solvent based adhesion promoter for various substrates. Sika Aktivator 100 is a solvent based colorless adhesion promoter, which reacts with moisture and deposits active groups on the substrate. These groups act as a link between substrates and primers or sealants adhesives. Sika Aktivator 100 is specifically formulated for the treatment of bond faces prior to the application of Sikas elastic adhesives and