A patient interface device is for use in a pressure support system delivering a flow of breathing gas to an airway of a patient. The patient interface device includes a sealing apparatus having a cushion structured to sealingly engage about the airway of the patient and defining a passage therethrough which is structured to receive the flow of breathing gas. A first magnetic material is coupled to the cushion, and a second magnetic material coupled to the cushion or another element of the sealing apparatus. The second magnetic material and the first magnetic material are configured such that there is a repulsive magnetic force therebetween. The coupling of the first magnetic material and the second magnetic material provides an adjustable coupling that provides selective adjustment of the magnitude of the repulsive magnetic force.