2mm X 4mm Silicone Tubing - TST-04/020 Silicone tube is non-toxic and biologically inert. it is FDA, BGA, WRC and NWC approved for drug and medical use, and meets European Pharmacopoeia class VI. Outstanding temperature resistance from -60°C to +200°C, it can withstand repeated autoclaving. Excellent chemical resistance (contact technical department for advice). Not suitable for high pressure applications.