PET monofilament has excellent resistance to high and low temperature performance, it can be long-term used at 120 ℃ temperature range and can be used at short-term withstand 150 ℃ high temperature. It also can resistant -70 ℃ low temperature, it will have little effect on its mechanical properties at low temperature. It is commonly used to produce personal or household hygiene sweeping brush, industrial brushes, painting brushes, etc.