The present volume comprises physical data (mechanical, thermal, electrical, optical properties) of three types of specialty thermoplastic materials and provides detailed chemical and process-related information of their behavior in their applications. These materials include fluoroplastics, high-performance engineering thermoplastics, and thermoplastic elastomers. Fluoroplastics are unique polymeric materials, which exhibit exceptional chemical inertness, resistance to elevated temperatures, resistance to ultraviolet radiation, excellent weather resistance, excellent dielectric properties, flame resistance, hydrophobicity, and most of them low coefficients of friction. High Performance Engineering Thermoplastics are engineering thermoplastics with uniquely high mechanical properties and resisting very high temperatures, typically above 150 °C for extended periods of time. Thermoplastic Elastomers are a large group of thermoplastic polymeric materials with elastic properties that can be processed and recycled as common plastics.