Review on 3M Urethane Seam Sealer, 08361: Gray 🧱 310 mL Foil Pack - Effective Sealing Solution by Donnell Cursed

, this material is an excellent and long-lasting filling. I suggest that in addition to your normal cleaning and priming prior to application, you also apply 2 strips of masking tape on each side of the seam before applying this material. Remove the tape immediately after application. This will make your final product look neater and more professional. Once this material dries, it is almost impossible to remove. Half of my firewall looks like crap, the other half with the masking tape technique looks like OEM.