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TOWER SILICONE All Purpose 100% Silicone RubberSealant is an all-purpose, acetoxy cure sealant, ideal for tough indooror outdoor waterproof applications. TOWER SILICONE cures at roomtemperature under the action of atmospheric moisture to give apermanently flexible silicone rubber. TOWER SILICONE exhibitsexcellent primerless adhesion to most materials and can be used forsanitary application. Use primer on cement substrates. Commonlyused on glass, tiles, ceramics, enamel, glazed tiles, varnished orpainted wood; and some plastics. It forms a flexible, durable airtight,water resistant seal offering exceptional protection. Once cured thebead is mildew resistant. TOWER SILICONE is safe for UV exposureand will not discolor.Performance Features:- Exceeds ASTM C-920, Class 25- Complies with requirements of FDA Regulation No. 21 CFR177.2600.2 Incidental Food Contact- Multi-Purpose - ±25% Joint movement- Primerless application- Weather resistant- Wide temperature-application range- Watertight, flexible seal- Interior / Exterior- 60-year guarantee