White Lightning Silicone Rubber is a premium, 100% silicone sealant that features outstanding protection against water and weather damage. Its excellent durability and flexibility make it the perfect sealant for areas exposed to heavy wear and harsh elements. White Lightning Silicone Rubber is commonly applied on: windows, doors, siding, trim and other general-purpose applications. It is excellent for interior/exterior application on: ceramic tile, porcelain, vinyl, wood and glass.