Permatex Copper SPRAY-A-GASKET Hi Temp Sealant, 12 oz aerosol can, 9

Fast-drying, metallic copper sealant helps dissipate heat, prevents gasket burnout and improves heat transfer. Fills minor surface irregularities. Seals instantly. Fills hot spots and surface imperfections. Temperature range -50°F to 500°F (-45°C to 260°C); resists all types of automotive fluids, especially gasoline. Level 3

Suggested Applications: Cylinder head gaskets, exhaust manifold gaskets, and other high temperature applications.