Can a sealent be used to repair a timing chain gasket if not how many hrs 2 fix.

If it truly is the timing cover gasket that is leaking the only way to stop the leak is to remove the cover and replace the gasket. I would have to know if this vehicle is 2 or 4 wheel drive and is it a 6 cylinder or 8 cylinder. The labor time will be different depending on the options. Feel free to call me with any questions. Scott from Schaumburg Automedics (847) 352-2886, 503 Lunt Ave. Schaumburg 60193. Thank You