NOVELTY - A gas permeable catalytic combustor (138) comprises catalyst and support for catalyst. The catalyst is placed in the fuel cell to oxidize a fuel stream in lieu of seal separating fuel stream from oxidizer stream. The support for the catalyst places the catalyst in simultaneous contact with fuel stream and oxidizer stream.    USE - For use in dual chamber fuel cells, e.g. solid oxide fuel cells for power plants, alternators, and automobiles.    ADVANTAGE - The invention eliminates the seals in dual chamber, thus reducing cost, eliminates migration of fuel gases to the cathode chamber, eliminates poisoning of cathode and dilution of oxidizer flow. It increases the efficiency of the cell. It withstands 700degreesC and provides longevity without leaking or cracking.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) dual chamber fuel cell (100) comprises gas permeable catalytic combustor, anode chamber (102), and cathode chamber (104). The anode chamber presents a fuel (106) to an anode (110). The cathode chamber presents an oxidizer (108) to a cathode (112). The anode and cathode chambers are coupled to for a continuous space in the dual chamber fuel cell. The catalytic combustion is in part(s) of the continuous space to react at least some of fuel with at least some of the oxidizer;    (2) gas permeable catalytic gasket comprising catalyst(s), and two surfaces. The first surface is positioned adjacent to a surface of a fuel cell stack. The second surface is positioned adjacent to a wall of chamber housing a fuel cell stack to form boundary between fuel cell stack and chamber. The gas(es) in the fuel cell reacts with the catalyst(s); and    (3) using catalytic combustor as seal in fuel cell comprising positioning combustor to come in contact with fuel after fuel has traversed a path over an intended electrode, and catalytically combusting fuel before the fuel can come in contact with unintended electrode.    DESCRIPTION OF DRAWING(S) - The figure shows a diagram of fuel cell with combustor.    Dual chamber fuel cell (100)    Anode chamber (102)    Cathode chamber (104)    Fuel (106)    Oxidizer (108)    Anode (110)    Cathode (112)    Gas permeable catalytic combustor (138)