GE Silicone GE612 Silicone II Bathroom Tub & Tile Sealant, ClearCaulk that keeps water out is a necessity in kitchen, bathroom, and plumbing applications. GE Silicone I Kitchen & Bath caulk is permanently waterproof and it will not shrink, crack, or crumble over time like acrylic. Silicone chemically cures while acrylic is water-based (it simply dries as water escapes). Some acrylics can shrink up to 25 percent, leaving gaps and cracks for water to seep through. Those leaks can lead to water damage and mold growth.GE Silicone GE612 Silicone II Bathroom Tub & Tile Sealant, Clear Features:Resists mildewRemains flexible for 50 yearsAdheres to all common bathroom surfacesPaint thinner clean-upClear10.1 oz