Armcoltherm 690 (-30℃~350℃) Thermal Oil Armcoltherm 690 is a high-performance organic synthetic heat transfer oil with a wide range of applications, with a maximum oil film temperature of 380°C.Suitable for forced circulation liquid phase heating system, and the boiling point is higher than the upper limit of the operating temperature. Armcoltherm 690 heat transfer fluid is especially suitable for polyester chemical fiber, spandex, petrochemical industry, engineering plastics, pesticides/pharmaceutical intermediates, silicones, refrigerants, coal chemicals, resins, fine chemicals and other fields.