From the #1 Silicone Brand, Advanced Silicone 2 Kitchen & Bath sealantisa high-performance,100%siliconeand100% waterproofsealant ideal forareas prone to water exposure. Advanced Silicone 2 Kitchen & Bath sealant ispermanently flexible with 40% more flexibility than Class 25 sealants and has 5X stronger adhesion than Silicone 1* sealant. Its 30-minute water-ready formula offers 10-year mold-free product protection to protect cured sealant against mold and mildew growth.Backed by a lifetime guarantee.