... thermal conductivity at +40 °C, λ40°C= 0,039W/mK, at 0 °C, 0°C = 0,034W/mK. Very good ozone resistance, UV-resistant ... °C to +200°C,flexible copper 0.75mm2 , Rated voltage 300/500v ,electric resisteace 23.0 Ohm/km single pre-insulated solar hose