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Gasketing

Gaskets provide correct compression and act as a ‘barrier’ for potential fuel leaks; maximizing the highest possible efficiency.

One of the important parameters in a fuel cell build is the thickness of the gaskets.  The gasket thickness determines how much the flow fields are allowed to pinch into the electrode.  For a good contact (i.e. low contact resistance), it is essential that the values are 0.002” to 0.003” for a carbon paper backing and 0.010” to 0.015” for a carbon cloth backing*.  Since electrode thickness for anode and cathode may vary, gasket thickness for each side is determined separately using the formula: Gasket thickness = (individual electrode thickness) – (desired pinch).

Teflon Gaskets
Silicone Gaskets
EPDM Rubber Gaskets
Mylar Laminate Gaskets
Kapton / Polyimide Gaskets
Natural Rubber Gaskets
Chemical-Resistant Rubber Gasket

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