Is there "marine RTV" or just use ultra blue?

[IcantDo55]

 

[Don S]

Re: Is there "marine RTV" or just use ultra blue?

On What?

 

[IcantDo55]

Re: Is there "marine RTV" or just use ultra blue?

Originally posted by Don S:<br /> On What?

Replacing the raw water pump and would like to seal it up good. So iot will be exposed to salt water. Also goibg to replace the exhaust manifold and riser.

 

[Don S]

Re: Is there "marine RTV" or just use ultra blue?

Raw water pump and manifold gaskets on what? Volvo, OMC, Mercruiser?

 

[IcantDo55]

Re: Is there "marine RTV" or just use ultra blue?

3.0LX mercruiser Alpha 1 G2

 

[Don S]

Re: Is there "marine RTV" or just use ultra blue?

Nope, no silly cone on water pump gaskets. Gaskets only. Same with exhaust riser gasket. No sealer of any kind

 

[IcantDo55]

Re: Is there "marine RTV" or just use ultra blue?

Originally posted by Don S:<br /> Nope, no silly cone on water pump gaskets. Gaskets only. Same with exhaust riser gasket. No sealer of any kind

I ask because there is some light pitting on the lower unit where the gasket goes and I don't wan it sucking any air in there and cavitating (sp?).

 

[rodbolt]

Re: Is there "marine RTV" or just use ultra blue?

if you use sillycone a leak is assured, ill warrenty that. if you feel the need to use a sealent perfect seal is permissable on the pump gasket, the riser gaskets go on dry after the metal is clean and shiney. <br /> sillycone has very very few uses in the marine industry, that and the acedic acids seem to react with saltwater and actually create corrosion problems with aluminium.