MAPESIL AC - Pure, mould-resistant, acetic silicone sealant with BioBlock technology for movements up to 25%. Revamp your home with ease with the MAPEI Mapeisil AC 134 Silk Silicone Sealant 310ml. Backed by bio-block technology, this silicone sealant handles up to 25% movements while providing excellent mould resistance. It's highly elastic and perfect for sealing, filling gaps, bonding various surfaces together, and more. 310ml Mastic Cartridge Good adhesion to non-porous surfaces Our Best-Selling Coloured Mastic Sealant 38 x Different Colours In Stock, Weight: 0.6834330122 Pounds, Manufacturer: Mapei