Remains flexible, mildew resistant This clear silicone sealant can be used on glass, fiberglass, masonry, aluminum, wood, and other applications where you would want the sealant to dry clear. Lexel is a copolymer rubber that stretches to absorb movement -- won’t dry hard or crack. Application temperature range: 0° F to 120° F. Service range: -30° F to 200° F. Apply to dry material. Cures in 24 hours. Standard 10.5-oz. cartridge. For Polycarbonate Silicone Sealant, see Sikasil B7533