Abstract: The present invention relates to a process for the manufacture of a sealing gasket for a refrigerator, which simultaneously uses at least three extruders to form in a single operation a sealing gasket. The extruders simultaneously feed, in an extrusion die, a rigid or semi-rigid polymer, a flexible polymer and a mixture of a binder polymer and a magnetic material, for simultaneously forming the sealing gasket and, wherein a magnetizable zone is fully embedded within the gasket. After the sealing gasket has been formed in the extrusion die, it is cooled in a cooling section and then passed to a magnetization step to cause permanent magnetic fields and to ensure that the sealing gasket is fully magnetized.