of the allowed expansion of foam strip 1 film strip 3 has slid almost completely off the top surface of foam strip 1 fig2 but is held in place by the adhered area in portion 5 b and thus covers the entire lateral surface 1 a of foam strip 1 this is the state which is present for example after a structural frame element equipped with the sealing tape has been installed in an opening in a building and has been sealed off by the sealing tape against the opening it should be pointed out however that in this case cover film 4 has been pulled off because the sealing tape is adhered to the frame element in question by means of self adhesive layer 2 fig3 shows two layers of another embodiment of the sealing tape according to the invention in which no cover film 4 is required in this embodiment portion 5 b of the film strip 3 is adhered to the entire top surface of foam strip 1 and its outside facing surface in this area is siliconized as a result of which it assumes the function of cover film 4 film strip 3 can project slightly beyond the free lateral surface loop 7 formed in the area of covered lateral surface 1 a in addition loop 7 can.