For slow-drying option check out Permatex Form-A-Gasket No. 2 Sealant.
Permatex 80008 Form-A-Gasket No 1 Sealant Fast Drying Hard Setting 3 oz Tube
Permatex For Form A Gasket No 1 Sealant 3 oz. Tube -65 F to 400 F Degree - 80008
Permatex 80008 Form-A-Gasket Type 1 Sealant 3 oz. 1 Pk
Permatex 80007 Form-A-Gasket No. 1 Sealant
Permatex 80003 Form-A-Gasket No. 1 Sealant
(5) Permatex 80015 Form-A-Gasket No.2 Sealant Squeeze 1.5 oz Tubes Slow-Drying