GE Supreme Silicone Kitchen & Bath Sealant, Clear, 10.1oz. From the #1 Silicone Brand, Supreme Silicone Kitchen & Bath sealant?is?a?premium, 100%?silicone?and?100% waterproof?sealant ideal for areas constantly exposed to moisture. This 30-minute water-ready formula has 100% more flexibility than Class 25 sealants and has 7X stronger adhesion than Silicone 1* sealant. It offers 50% joint movement capability for a shrink and crack-proof seal. This sealant also resists mold and mildew growth with lifetime mold-free product protection. Backed by a lifetime guarantee.