J-B Weld MufflerSeal is a metal-containing paste that prevents and seals leaks at seams and gaps of pipe and exhaust connection points. When fully cured, this paste dries to a cement-like hardness that is heat resistant up to 850 degrees F. J-B Weld Muffler Cement is not a structural adhesive

Product Features:

• Muffler cement
• Withstands heat up to 850 degrees F
• Dries in 2-4 hours
• Iron reinforced