General Characteristics of Semi-Crystalline High Performance Materials High service temperatures Excellent chemical resistance High purity Semi-crystalline high performance materials can be considered for applications with an approximate maximum temperature of 350°F. Selecting a plastic material for use in a high temperature environment requires careful review of material properties data. Explore Semi-Crystalline High Performance Material PEEK Strong, stiff plastic with outstanding chemical resistance; performs over a wide range of temperatures. PPS Plastic material with excellent chemical and corrosion resistance at elevated temperatures. PTFE Low friction engineering plastic with outstanding chemical, high temperature, and weathering resistance. PVDF High purity engineering plastic with excellent chemical, abrasion, and flame resistance.