GE Advanced Silicone 2 Kitchen and Bath sealant is a high-performance, 100% silicone and 100% waterproof sealant ideal for areas prone to water exposure. GE Advanced Silicone 2 Kitchen and Bath sealant is permanently flexible with 40% more flexibility than Class 25 sealants and has 5X stronger adhesion than our Silicone 1 sealant.