Sealing fuel hose at a barb

[Oily Rag]

Is it good practice to use anything to seal the hose at the barb other than the pressure of the hose clips?

 

[Poignard]

Is it good practice to use anything to seal the hose at the barb other than the pressure of the hose clips?

I wouldn't, and it shouldn't be necessary if everything is the right size and in good condition.

If I ever did think of using a sealant I would be worried that bits of it might one day end blocking something.

 

[Moodysailor]

If it's a fuel line, best practice would be to use a stainless steel 'supra clamp' style as a conventional 'jubilee' style clamp can cut into the hose on the internal tail.
TBH - if I could afford them, I would use Mikalor Supra Clamps on every single hose fitting on board - you could say i'm a fan

Mikalor Supra Clamp

Jubilee Superclamp

But no, no need for any additional sealant provided the hose & barb are the correct (same) sizes.

 

[179580]

Should always use fuel hose clamps, normal Jubilees can distort and cause leakage.

 

[Caraway]

I prefer fuel hose clips like these, without reinforced saddles, which tend to flatten the hose at that point.
You have to buy the correct size.

https://www.amazon.co.uk/Stainless-Jubilee-Petrol-Clamps-Silver/dp/B07MWDJGY3


These are better provided you get the specific size and use on new pipe 6mm Fuel Hose Spring Clip Constant Tension Mikalor Clamp

 

[TernVI]

If it's a fuel line, best practice would be to use a stainless steel 'supra clamp' style as a conventional 'jubilee' style clamp can cut into the hose on the internal tail.
TBH - if I could afford them, I would use Mikalor Supra Clamps on every single hose fitting on board - you could say i'm a fan

Mikalor Supra Clamp

Jubilee Superclamp

But no, no need for any additional sealant provided the hose & barb are the correct (same) sizes.

I tried using those recently, I gave up due to the narrow daimeter range each size works with.
Normal worm-drive clips don't work well with some smaller sizes, but for anything over about 25mm, if a worm drive clip doesn't work, you have to ask 'why is that?'.

Sometimes a spring clip is a better bet, becuase it won't lose tension if the hose material softens a little or moves with temperature.
Depends on the application.

 

[Moodysailor]

I tried using those recently, I gave up due to the narrow daimeter range each size works with.
Normal worm-drive clips don't work well with some smaller sizes, but for anything over about 25mm, if a worm drive clip doesn't work, you have to ask 'why is that?'.

Sometimes a spring clip is a better bet, becuase it won't lose tension if the hose material softens a little or moves with temperature.
Depends on the application.

It's horses for courses, or whatever cliche fits ;-)

For example, on exhaust hose, underwater fittings or reinforced hose a "supra clamp" type is much better as it can exert more torque, and are wider so the load is spread over a wider area. The clamping mechanism is not part of the clamp band.

On fuel hose, a suitable band type clamp is better as there is no risk of it cutting the hose, and the load is spread evenly around the clamp.

On "regular hoses" (i.e domestic water) a worm drive clamp is perfectly fine and is what almost all of us use as they work perfectly well, are available easily and relatively cheap.

 

[thinwater]

Two more things:

• The bands MUST be 100% on the barb. If they hang over they can cut the hose.
• Take a close look at the barb. Most leaks start with a defect or gouge in the fitting.

A sealant is never used. If you think you need one, something is wrong.