We produce ptfe expanded tape, if you have purchase, please send to yongxinseal at live dot cn, we shall supply best price and high quality for you. Size:3*2mm~80*30mm Details: Temperature range: - 240°c up to +260°c, for short periods up to +310°c Chemical resistance: resistant against all chemicals from ph 0-14 .Except molten alkali metals and elemental fluorine at high temperature and pressure Pressure resistance: vacuum up to 200 bar Density: 0.6g/cm³~1g/cm³ Colour: white. Size:3*2mm~80*30mm.