For inventory control purposes, product name may be followed  by an X. Products labeled PFA 350 and PFA 350 X are equivalent, and all  information in this document is applicable to both. 

Typical Applications  

Applications for Teflon™  PFA 350 include extruded tubing for use  in handling aggressive fluids at high pressures; chemical linings  for pipes used in the chemical processing industry; film for high  flex service; and traditional extruded, injection-molded, or blowmolded articles requiring the unique performance of Teflon™. 

Description  

Teflon™  PFA 350 is a general-purpose fluoropolymer resin  available in pellet form. Compared with other grades of  Teflon™  PFA, its most unique features are a relatively low flow  rate, greatly increased flex life, and enhanced resistance to  environmental stress-cracking over both Teflon™  PFA 340 and  345 (Teflon™  PFA 350 has a typical MIT folding endurance of  500,000*, compared to that of 15,000 and 50,000 for Teflon™ PFA 340 and 345, respectively). Teflon™  PFA 350 is preferred  when extended service is required in hostile environments  involving chemical, thermal, and mechanical stress. Table 1  shows the typical property data for Teflon™  PFA 350.  

Teflon™  PFA 350 is used when traditional extrusion and molding  processes are required for producing products with the  superior properties of a fluoropolymer resin. Compared to other  thermoplastics, the high melt strength and thermal stability  of Teflon™  PFA 350 can be used to improve processing rates.  Compared with other fluoropolymers, creep resistance at high  service temperatures provides a superior balance and level of  end-use properties. Teflon™  PFA 350 combines the processing  ease of conventional thermoplastics with many properties similar  to those of polytetrafluoroethylene.  

Properly processed products made from neat Teflon™  PFA  350 resin provide the superior properties characteristic of  fluoropolymer resins: chemical inertness, exceptional dielectric  properties, heat resistance, toughness and flexibility, low  coefficient of friction, non-stick characteristics, negligible  moisture absorption, low flammability, performance at  temperature extremes, and excellent weather resistance. 

In a flame situation, products of Teflon™  PFA 350 resist ignition  and do not promote flame spread. When ignited by flame from  other sources, their contribution of heat is very small and added at a  slow rate with very little smoke.