Sika Aktivator-205 is an alcoholic solution containing a bond-activating substance for cleaning and activating bond faces prior to bonding and sealing with Sika products. Use Sika Aktivator-205 is used to activate the following non-porous substrates: Metals Plastics Glazed Ceramic Painted Surface Characteristics and Advantages Easy to use Improves adhesions on substrates Colour Clear Packaging 250ml 1L.