If you are doing sheet metal repair to your Porsche (or any car, for that matter), wurth seam sealer is a must-have. It is used to seals seams & joints that are spot welded, riveted, or bolted. permanent adhesion to bare or painted surfaces. Brush able, low odor formula goes on thick to seal completely, and provides an OEM appearance when finished. Will not sag, shrink, or crack, and is paint-ready in 45 minutes. Temperature range from -13 f to +176 f.