Tondicht is a single-component sealant which penetrates deep into the ceramic material (modelling compounds) and closes all pores tightly and permanently. So vessels realised with modelling ompounds (Keramiplast, Keramiton etc.) become watertight. To do this, articles are simply rinsed with Tondicht. Tondicht dries completely within 6 hours, then articles can be filled with water and ut into use.