PTFE/PVDF/PCTFE corrosion-resistant plastic bearings

PTFE, PVDF, and PCTFE materials have excellent corrosion resistance, high temperature resistance, and wear resistance, and can be used in all concentrated acid and alkali applications, including hydrofluoric acid (HF) and fuming sulfuric acid nitric acid (over 98%). Among all known engineering plastics, PTFE has the best corrosion resistance, with a long-term use temperature of up to 250 ℃. However, PTEF material has extremely low mechanical strength and poor dimensional stability; PVDF and PCTFE materials have high mechanical strength and good dimensional stability. PVDF can be used for a long time at a temperature of 180 ℃, while PCTFE can be used for a long time at a temperature of 170 ℃.