Osmo non-acrylic Water-based Woodfiller 250g Multi-purpose: Edge-filler, wood putty, crack filler and sanding sealer all in one! Non-acryllic and water-based, fast drying within approx. 30 minutes Ready to sand once dry, will not clog sandpaper and can easily be sanded Non-flammable and non-toxic, heat and freeze proof, will not crack, shrink, sink or fall out