Synthetic Fibers, Synthetic Resin and Plastics, Synthetic Rubbers
183 micrometers (7.2 mil)
Basic Weight (g/m2):
Tensile Strength - max. (MPa):
43 (6.2) in MD, 32 (4.6) in TD - Method: ASTM D 882
Non-Std Modulus (MPa):
249 (36) - Method: ASTM D 882
Elongation to Break (%):
225 (MD), 310 (TD) - Method: ASTM D 882
Tear Resistance - Initial (g/mm):
6000 (MD, TD) - Method: ASTM D 1004
Tear Resistance - Propagating (g/mm):
>100 (MD), >150 (TD) - Method: ASTM D 1922
Specific Gravity (23 °C, 50% RH):
Available Acid Capacity (meq/g):
Packaging & Delivery
Typically 3 - 5 days depending on location
Untreated Nafion 117 Membrane used to separate the anode and cathode compartment of PEM fuel cells and water electrolyzers.
Untreated Nafion 117 is 183 micrometers (7.2 mil) thick.
DuPont™ Nafion® 117 membranes are non-reinforced films based on chemically stabilized perfluorosulfonic acid/PTFE copolymer in the acid (H+) form. The physical properties remain the same for the chemically stabilized membranes, which exhibit substantially lower fluoride ion release compared to the non-stabilized polymer – a sign of improved chemical durability. Nafion PFSA membranes are widely used for Proton Exchange Membrane (PEM) fuel cells and water electrolyzers. The membrane performs as a separator and solid electrolyte in a variety of electrochemical cells that require the membrane to selectively transport cations across the cell junction. The polymer is chemically resistant and durable.