Waterproof sealant: This clear caulk seals out air, water, and moisture with 100% silicone as cured Speed meets strength: Caulk & Seal's silicone caulk is ready for water exposure in as little as 30 minutes All-purpose: Gorilla caulk works wherever the work is; Indoor and out, rain or shine after fully cured Gorilla tough: This clear silicone caulk is not only 10 year mold & mildew resistant, it won't yellow, shrink or crack over time Use on: Our sealant is perfect for windows, doors, stainless steel, fixtures, countertops, laminate, porcelain, sink, shower, tub/tile, granite, ceramic, gaps & cracks, painted surfaces, wood, vinyl, metal, aluminum, trim/siding, cables, glass, drywall, stone, marble, gutters, plumbing, and more