GE All Purpose Silicone 1 Sealant, Clear, 10.1oz. From the #1 Silicone Brand, All Purpose Silicone 1 sealant is a 100% silicone and 100% weatherproof sealant ideal for areas that could be exposed to weather. Common uses include windows, doors, siding, trim, molding, baseboards, vents, basements, attics and around wiresandpipes. Its same-day rain-ready formula is extremely flexible with strong adhesion and resistance to stain-causing mold and mildew growth with 7-year mold-free product protection. Backed by a lifetime guarantee.