Silica-based filler specially developed for WEICON cyanoacrylate adhesives for covering larger adhesive gaps of more than 0.1 mm as well as for filling cracks, gaps, holes and unevenness. Contact filler is therefore suitable in combination with Contact cyanoacrylate adhesive not only for bonding, but also for reinforcing, shaping, modelling, fixing, filling as well as evening out and levelling.