TEC cables manufactured by ESP Cable Solutions Co., Limited are used in the oil & gas industry. It uses welded tubing(316L, Allloy825 or others) to protector electrical and optical components from the pressure and corrosive effects of the downhole environments. Customers can choose bare or tro-pp encapsulated TEC, so that they can handle the extreme environment, extreme temperature and extreme pressure in the downhole. -- 4mm Tubing Encapsulated Cable - 11mm X 11mm Square Encapsulated Product Name: 18AWG, 300 Degree Celsius 4mm Tubing Encapsulated Cable Conductor: 18AWG, Tinned Stranded Copper Conductor Insulation: PFA Insulation Jacket: PFA Jacket Tubing: 4mm X 0.76m 316L SS Capillary tubing Encapsulated TEC Cable: 11mm X 11mm Square PP Encapsulation Temperature Rating:  300 Degree Celsius  Recommend Packing: 5000m/spool or 20000FT/spool