Managing the leakage gas in a planar solid oxide fuel cell (SOFC) stack is one of the important factors associated with stack degradation. When the fuel leaks to the air electrode, the catalytic property of the cathode deteriorates. Further, when air leaks to the anode using Ni metal, the electrolyte thin film is peeled from the anode surface by reoxidizing Ni with NiO. Therefore, one of the ways to prevent deterioration characteristics of the SOFC stack is to effectively manage the sealing method to shut off the leaking gases. However, when the SOFC stack is used over a long period of time, gas leakage may occur due to degradation of the sealing material. In this study, we developed a stack of specially designed channels in a sealing gasket to prevent gas leakage to the fuel and air electrodes for the stability of the SOFC stack. The stack was evaluated using 10 x 10 cm² anode support cells. This stack design can be operated for thermal cycling from operating temperature to room temperature, and ensuring the reliability of the stack even in the event of momentary interruption of air or fuel.