PSU (Polysulfone) rod, also known as polyaryl sulfones, is an amorphous, food-safe thermoplastic with high dimensional stability and mechanical strength. It has excellent dielectric properties, is chemically resistant, and has a flammability rating of class UL94 V-0, which means the polymer will self-extinguish after the flame is removed. Polysulfone rod is also resistant to radiation and can be used in repeated steam sterilisation applications due to its hydrolysis resistance. Because PSU is not UV stabilised and is susceptible to weathering, it should not be used in outdoor applications.

 PSU rod is commonly used in applications where components must operate at higher temperatures and are microwave permeable. We frequently machine polysulfone rods into parts used in humidifiers, steam cleaning applications, and microwave ovens at Petron Thermoplast. Please see our plastic machining section for more information on the machining services we can offer.