The precompressed sealing tape for sealing a joint includes an elastically re-expandable foam strip and a foil-type wrapping, which completely surrounds the foam strip and thus holds it in a precompressed state. A transverse surface of the foam strip is pressed against a strip-like element of stiff material, which is arranged inside the wrapping. A double-sided adhesive tape connects the foam strip to the strip-like element, and the strip-like element is adhesively connected to the foil-type wrapping.