The 100% Silicone Sealant is a top-notch, multi-purpose formula that creates enduring, weather-resistant seals. It has excellent adhesion, flexibility, and durability, and can be utilized on various surfaces indoors or outdoors. Adheres to: Aluminum, Ceramic Tile, Glass, Porcelain, Fiberglass, Vinyl, Plastic. Suitable for: Window and Door Frames, Skylights, Aluminum Siding, Trim, Gutters, Vents, Pipes, Air Conditioners. Features: • Creates a Water-Repelling Seal • Incredible Flexibility • Exceptional Adhesion to Many Surfaces • Not Paintable • Use Solvent to Clean • Suitable for Interior/Exterior Use • Will not Crack, Shrink, or Peel. This case contains 12 cartridges – ONLY SOLD AS A CASE.