Tradenames - Tefzel is a registered tradename of E.I. Dupont De Nemours. Tefzel shapes are commonly extruded & molded by divisions of Saint Gobain.Kel-F is a registered tradename of 3M Corp. 3M discontinued this product several years ago, but the tradename is still commonly used today. Most PCTFE supplied today is made from Daikin Neoflon resin. PCTFE shapes are commonly extruded & molded by divisions of Saint Gobain. Halar is a registered tradename of Solvay Solexis. Halar ECTFE shapes are commonly extruded & molded by divisions of Saint Gobain. Rulon®, Meldin®, Tygon®, Chemfluor®, Versilic®, Pharmed®, PharmaPure®, SaniTech®, Santoprene®, and Tygothane® are regsitered tradenames of Saint Gobain Performance Plastics. Professional Plastics presents all information to the best of our knowledge and accepts no liabilities for any accidental errors or ommissions contained on this website.