The outer Material:pvc heating wire,silicone heating wire (Maximum temperature: 105oC) Heating code: NiCr It is flexible and curved Can be easily installed It is widely used on refrigerators, air-considerations and many home appliances Resistant voltage in water: ≥500Ω The resistance wire and the air isolation is not easy to oxidize pvc heating wire PS: We can make different specifications according to your requirements such different Voltage, different power, different length. Packing: carton