Silastic silicone sealant is a type of sealant made from silicone. It is a flexible and waterproof sealant that is often used for sealing seams and joints in bathrooms, kitchens, and other areas of the home. It is also used to seal windows, doors, and other areas where air and moisture can enter. Silastic silicone sealant is available in a variety of colors and can be painted over to match the surrounding area. It is also resistant to UV rays, making it a good choice for outdoor applications.