replacing rubber fuel line on f-pump leak

[nrasac]

My truck (72 350 engine 81 c10) was having trouble starting and I realized that there was a small leak and abrasion on rubber hose that joins between metal fuel line and mechanical fuel pump.

I replaced it and replaced the old hose that connected to inline fuel filter and carburetor to the metal line that threads into fuel pump.

The rubber hose is held in place by hose clamps. When starting truck it was leaking by the clamps connected to inline fuel filter and fuel pump.

I was wondering if there was any sealants that I could place on metal line that would allow rubber hose to slide on and seal while using hose clamps?

I know rubber hose isn't ideal but it is what it is. The rubber hose from fuel tank line to fuel pump is about 10 in. and the two rubber hoses connecting inline fuel filter between pump and carb are 6 in. total.