Chemical resistance in harsh environments is one of the fundamental performance advantages of CR1. It is resistant to a wide range of acids, fuels, solvents, and moisture. Heat resistance up to ~300°C is possible, although the part is usually limited by the melting point of the solder used to attach lead wires to the thermistor. A proprietary Amphenol Advanced Sensors process allows the polymer to exceed the voltage standoff requirement for automotive sensors, with an associated advantage for coating thickness reduction. Coating with CR1 allows accurate dimensional control of the coated thermistor, providing fast thermal time response. The tensile strength of CR1, which is greater than 4x that of silicone, extends thermal shock performance and ensures good mechanical integrity of the thermistor chip package.