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Anti corrosive barrier

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laser193713 View Drop Down
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Post Options Post Options   Quote laser193713 Quote  Post ReplyReply Direct Link To This Post Topic: Anti corrosive barrier
    Posted: 20 May 09 at 10:34am
Originally posted by English Dave

 it may appear in "Pimp" in a few weeks.)

You are breaking the most important rule here!

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didlydon View Drop Down
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Post Options Post Options   Quote didlydon Quote  Post ReplyReply Direct Link To This Post Posted: 18 May 09 at 3:18pm
So, excuse me for asking what might appear an obvious question - I'm not familiar with this. Do you apply this Duralac to anything stainless where it comes into contact with an ally mast or boom? Is it like a grease or mastic that goes between fittings like kicker straps & eyes for blocks & things, thus preventing an electrolytic reaction? 
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alstorer View Drop Down
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Post Options Post Options   Quote alstorer Quote  Post ReplyReply Direct Link To This Post Posted: 13 May 09 at 6:11pm
hmm. It'll certainly stop a galvanic cell setting up when merely damp, but water will still get to both metal and surfaces, and when properly wet all the way around. The Durlac doesn't just act as a spacer keeping the two apart, but as a barrier coating helping stopping water getting in.

It'll kindof work, certainly better than the two pieces being in contact, but there's a chance you're still creating a location for hidden corosion. Do you want to take the risk or not?
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English Dave View Drop Down
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Post Options Post Options   Quote English Dave Quote  Post ReplyReply Direct Link To This Post Posted: 13 May 09 at 5:05pm

I need to squeeze a thin strip of stainless in between an existing stainless steel fitting and my aluminium mast. Normally I would throw on a load of Duralac and be done. However, I cannot fully remove the fitting so I will have slide the steel strip into place. This makes applying the Duralac (and keeping it on) more difficult.

I have been told that if you chop up a 2litre milk bottle, the plastic will do just as well as the duralac. Certainly easier to slide in alongside the steel strip (it's a shroud plate but I'm not using it as this - it may appear in "Pimp" in a few weeks.)

Purists may say stick to the Duralac but  wonder if anyone else has experience of the milk bottle technique?

English Dave
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