Factory style hose clamps

I still use the corbin's when I have the right size on hand. Clean and dry inside of hose, apply a thin layer of Permatex # 2A to interior of hose, lubricate the outside of hose where the clamp will be with Sil-Glyde grease so the clamp can relax into the rubber without friction. Install hose and slide clamp in place. Never had one leak on new or old hoses. The hoses CAN be removed later because #2A doesn't harden, it just gets thick like chewing gum, easier yet if the hose is still warm. This process was taught at Chrysler Tech back in the 70's, perhaps earlier before I started wrenching at the dealerships.