Newton 801-M Mastic Sealant is a non-toxic, solvent-free, multipurpose and single component silicone sealant, primarily used in conjunction with Newton System 800 Damp Proofing membranes. Applied to the fixing plugs before they are fitted, Newton 801-M Mastic Sealant serves so as to seal the penetration and stop the occurence of a ‘bridge’ between the damp or stained substrate and the new internal surface. Newton 801-M Mastic Sealant has a high resistance to both ageing and extremes of temperature, as well as achieving a high adhesive strength, without primer, on the majority of materials used in the building and engineering industries.