Mapei Mapesil AC Sealant 310ml is a 100% acetic silicone sealant for sealing glass, ceramic and anodised aluminium. A highly elastic silicone sealant allowing for movements up to 25%, Mapei Mapesil AC Sealant is solvent-free and resistant to mould and mildew. It is ideal for sealing joints in wall and floor coverings of ceramic and cement, sealing joints between sinks or sanitary ware and ceramic tiles, expansion joints in swimming pools, sealing glazing, doors and window frames, as well as sealing air ducts, water pipes, tanks, service pipes and boilers. If used with a bonding enhancer, Mapei Mapesil AC Sealant can also be used on concrete, wood, metal, painted surfaces, plastic and rubber.