The present invention relates to a graphite yarn bonnet gasket. The graphite yarn bonnet gasket improves a graphite bonnet gasket mounted in a valve device of a power generation facility to prevent graphite from being extruded and reduce pressure of a contact surface to improve sealing properties of the bonnet gasket. According to the present invention, the graphite yarn bonnet gasket comprises: graphite yarn formed by reinforcing the graphite with an inconel wire; and a reinforcement material braiding the graphite yarn to have a thin band shape. The present invention has a technical idea that the reinforcement material is compressed and molded on an upper surface and a lower surface to be integrated with the bonnet gasket.;COPYRIGHT KIPO 2016
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