Description 300ml tube silicone high modulus brown a professional high modulus silicone that cures quickly to provide a permanently flexible rubber seal used for a wide range of building glazing and household applications such as weather sealing joints around door frames windows and pipes not metal based size 300ml tube colour brown coverage approximately 12 meters using 5mm bead application temperature 5 to 40 deg c service temperature after curing 50 to 120 deg c