Clean the surfaces and use a little bit of silicone. - Saab 9-5 Bulletin Board - Saabnet.com
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Clean the surfaces and use a little bit of silicone.
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Posted by dmz789qqq [Email] (more from dmz789qqq) on Thu, 20 Feb 2014 07:06:19 Share Post by Email
In Reply to: waterpump to block pipe o-rings leaking again. advice?, jarrald, Wed, 19 Feb 2014 13:06:48
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Once they start corroding the surfaces are no longer smooth and do not seal well. A little leak will accelerate corrosion again and quickly increase the leak - so it is important not to start small leaks in the first place - e.g. by using a very thin coating of automotive grade silicone sealant during installation.

I have been using this technique for 10+ years on all kinds of coolant connections (hoses, o-rings, gaskets) and never had a leak.

Rubber to plastic contacts usually age better as there is no corrosion - no particular need for sealant on those surfaces, just cleaning.

Breaking "sealed" connections requires a little more effort than usual but nothing major. Silicone sealant is usually easy to clean off and reapply when a connection has to be redone.

posted by 67.90.20...

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