Perfluoroalkoxy (PFA)

A member of the fluorocarbon family of plastics, in which perfluoroaklyl side chains are connected to the carbon-fluorine backbone of the polymer through flexible oxygen linkages. PFA was introduced by Du Pont in 1972. These resins can be easily processed by extrusion and injection molding.
See also Fluorocarbons.
Whittington’s Dictionary of Plastics, 2nd ed., 229.