I used gasket shellac on mine. gas and oil proof....
https://www.permatex.com/products/gasketing/gasket-sealants/permatex-indian-head-gasket-shellac-compound/
Evan
HM 1103
https://www.permatex.com/products/gasketing/gasket-sealants/permatex-indian-head-gasket-shellac-compound/
Evan
HM 1103


