1994 Ford Aspire Coolant leak problem

Hi,

Wanted to ask if anyone has any ideas. I have replaced the Thermostat and bolted on the connection. I have a small coolant leak coming from the bottom of the metal housing that connects the hose to the motor. Tried using a gasket. A gasket with silicone. And now just silicone. Still leaking. Driving me nuts.

Any suggestions please?

Thank you for your time.

Dean