The G150 provides excellent adhesion to a wide variety of surfaces, including glass, tile, cultured marble, vinyl, aluminum, and sheet metal without the need for primer. As a result of its unique engineering, this product cures rapidly when exposed to atmospheric moisture. It forms a durable, tight bond that glazers, contractors, and installers can depend on. This product should not be used when glazing insulated units - it is not suitable for structural glazing or insulated glass, laminated glass, mirror installations, or aquariums. (24 Tubes Come in the Case)