Harken Tef-Gel Anti-Corrosion Paste

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Ian_Rob

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Is this the necessary and suitable when using monel rivets to fix to an aluminium mast? Anything better?
 
My pal installed everything with it on his mast 15 years ago when he built it. I helped him remove some fittings recently and everything came apart easily. We use Tefgel a lot now
 
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Me being old fashioned use Duralac, which appears to be much cheaper, Which is better I have no idea..
 
Used to use Duralac but tends to go off in the tube if you dont use much, so switched to tef gel. Seems expensve but you use very little. Haven't unscrewed anything yet so no idea if it works. I think it is PTFE based.

I note we haven't actually answered OP question which is whether you need anything with monel rivets into an aluminium mast and I don't know the answer to that.
 
The Q said:
Me being old fashioned use Duralac, which appears to be much cheaper, Which is better I have no idea..
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My understanding is that Tef Gel is better between surfaces which fit together neatly.. Duralac is better where the surfaces do not come together closely.
 
Duralac includes chrome VI (AKA hexevalent chrome) which is a carcenogen. Something to be careful with and very hard to buy in the US for that reason.

Tefgel is contains Teflon (obvious?) and a very tacky synthetic grease which will not degrade. Also an excellent anti-seize. Also used on some elelctrical contacts and as general purpose grease on fittings prone to corrosion. Electrical plugs. Machine screws in masts, and ... rivets.

They are really very different products that can be used for some of the same purposes.
 
thinwater said:
Duralac includes chrome VI (AKA hexevalent chrome) which is a carcenogen. Something to be careful with and very hard to buy in the US for that reason.

Tefgel is contains Teflon (obvious?) and a very tacky synthetic grease which will not degrade. Also an excellent anti-seize. Also used on some elelctrical contacts and as general purpose grease on fittings prone to corrosion. Electrical plugs. Machine screws in masts, and ... rivets.

They are really very different products that can be used for some of the same purposes.
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Having used both Duralac and Tefgel, Tefgel is in another League. Duralac is horrible stuff
 
I was warned about the chromium 6 in Duralac by a chemist years ago and always after that was very careful to avoid skin contact. I also found it unpleasant stuff to use. Tefgel I only found out about a few years ago and wouldn't assemble a joint without it now. Despite that I am still using the first container that bought, you use very little at a time.
 
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