The longer life pressure switch comprises a housing body of a rubber membrane (5) for sealing between a pressurized fluid and a pressure sensitive metal disc (6) a concave position to a convex position and vice versa, and can activate and deactivate an electromechanical device for opening and closing an electrical circuit. Said rubber membrane (5) having a disc shape and having a first face facing the fluid under pressure and a second face 9 facing the metal disc (6), the pressure switch further comprises at least a first air chamber (10). ) interposed between the second face of the rubber membrane (5) and the concave surface of the disk (6) to reduce the contact area between the membrane and the disk.
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