Characteristic. Weather resistance, ozone resistance: won’t deteriorate at outside in long-term exposure. Fire resistance: no spontaneous combustion, contact with fire will burn, it will put out if leave the fire. Heat resistance: long-term use within 100℃, up to 120℃ for discontinuous use. Oil resistance: resistance to aliphatic hydrogen carbide, lubricating oil, animal and plant oil, etc., not resistance to aromatic hydrogen carbide or halogen hydrogen carbide.