Abro Eagle Head Gasket Shellac. Brush-on sealer for paper, cardboard and felt gaskets. Fast drying, hard setting. Resists most petroleum products and shop fluids.
However, In the engine block are pistons that travel up and down in cylinder bores. The head gasket seals in the internal combustion process and also keeps coolant and oil from mixing together as the two fluids travel from the engine block to the cylinder head.