Oatey 25686 Hercules 11-Ounce Clear Cartridge Silicone Plumber's Caulk High-quality, 100% pure, professional grade sealant. Excellent adhesion to most porous and non-porous materials. Tack-free in 30 minutes; completely cured in 24 hours. Excellent adhesion to most porous and non-porous materials Tack-free in 30 minutes; completely cured in 24 hours High-quality, 100% pure, professional grade sealant