Factory style hose clamps

When I restored my 69 'cuda 440 back to original condition I wanted it just as it rolled off of the assembly line. I put black silicone RTV on the inside tip of each hose (about one inch) before putting them on the radiator, water pump, thermostat housing, etc. then installed the clamps. Give it time for the silicone to dry before starting the engine. I never had a leak in 20 years now.