The invention relates to a method for utilizing a combustible gas product collected in the seal device of a compressor of the said combustible gas product, comprising the steps of: a) feeding the sealdevice of the said compressor with an inert gas flow, b) recovery at the outlet of the said seal device of a gas flow containing all or part of the inert gas flow of step a) and all or part of the gas flow of combustible product collected in the said compressor seal device, to supply a line connected to the outlet of the seal device, c) separation of the said gas flow (mixture of inert gas and the gas flow of combustible product) at the outlet of the said line into two gas flows, the first being intended to feed a fuel header connected to burners, and the second being sent to a flare to be burned (the lines conveying the gas flows of steps b) and c) constituting the leak circuit). The pressure in the seal device is maintained at a pressure above the gas pressure in the fuel header. The invention applies in particular to the utilization of hydrogen leaks, particularly in the context of the production and processing of synthesis gas.