Permatex MotoSeal 1 Ultimate gasket maker works for 2- and 4-cycle engines. It creates a solvent-based bond that fully seals within 20 minutes, and it forms a tough flexible bond that is highly effective on irregular and uneven joint surfaces. Permatex MotoSeal 1 Ultimate gasket maker resists gasoline and other damaging fluids, while withstanding temperatures of 350 degrees F (177 degrees C) continuous and 400 degrees F (204 degrees C) intermittent.