GE Tub and Tile Silicone 1 Sealant is a 100% silicone, 100% waterproof sealant ideal for areas susceptible to moisture, such as sinks, tubs, showers, fixtures, countertops, backsplashes, and other plumbing projects. Tub and Tile Silicone 1 offers permanent flexibility and strong adhesion, and it's designed to be resistant to shrinks and cracking. Use our silicone bathroom sealant on a variety of common surfaces, including most metals, plastics, and woods; glass, drywall, plaster, granite, and more.