An induction sealing device (15) for heat sealing packaging material for producing sealed packages of pourable food products, comprising: at least one first inductor (20,21) which comprises, in turn, a first active surface (25,26) adapted to be arranged on the side of packaging material and to heat-seal it; and a member (23) made of plastic material; first active surface (25,26) is covered by said member (23) made of plastic material adapted to cooperate with said packaging material during its heat-sealing.