Pipe sealant

[Ruffles]

I'm replacing some radiator hose tomorrow. I've put pipe sealant on my shopping list but then it occurred to me I've got a tin of "Plumbers Mate" in the garage from when I replaced some radiators. Any reason I can't use this? I like to pull the pipes off the raw water pump in winter to ensure it has drained so I'd rather not us a 'strong' sealer.

I'm also replacing the short section of exhaust hose between the manifold and the muffler. Should this have some sealant? It hasn't at the moment. I was thinking of using the red gas pipe gunge. This should make it easier to get the thing off for winterising - which is what caused damage to the pipe in the first place!

 

[alexrunic]

i have never heard of any one using any sort of sealant with rubber hoses.

again you should not need sealant with exhaust house. jubilee clips are all that's needed and double them up on the exhaust system and for sea-cocks etc.

 

[Salty John]

I wouldn't use any sealant, just hose clamps.

 

[Ruffles]

Fair enuff. If you promise it wont leak! The pressure generated by the raw water pump in an MD2030 is fairly impressive!

I'll clean the spigots. That should help. I assume it's standard radiator hose? I was hoping to pay Halfords prices.

 

[Salty John]

It may leak if the hose is the wrong size but the solution is not sealant, it's getting the correct size hose.
I've never used sealant on hoses but I have seen it used to bodge the connection where the hose is slightly oversized.
On critical applications - through hulls - I use two hose clamps, and the right sized hose.