THREEBOND 1207B SILICONE. B1207B is a single-component, non-slumping paste, solvent free and non-acid RTV (room temperature vulcanizing) silicone liquid gasket which begins to set in minutes. Perfect for sealing complex three point surfaces of cylinder blocks, oil pans, valve covers and joint surfaces with large clearances to prevent oil, water, gasoline and chemical leaks.
eBay