re. Gasket sealant?

[Ben Swann]

Dennis,

 

I'm fairly religious about using the Permatex liquid gasket sealant - small
can with brush, gooey black stuff.  It was originally sold as "Aviation/Marine
gasket sealant"  and Permatex now sells it, available everywhere.  I almost
never have leaks and then only if the surface was compromised.  I have been
using for years on all Audi, VW and Chevy smallblock Marine/performance
engines, among others.   It also is good for re-using cleaned up O-ring and
compression fittings when new parts are not readily available.

 

For sealing threaded compression fittings/unions, etc. I find (after cleaning)
the copper anti-seize is good to keep them ready for service should you need
to revisit the job in a year or two.  Examples of this are fuel injector
unions, line swivels, and brake lines.

 

Of course blue lick-tite on threaded fasteners that don't get too hot, and
red-locktite on manifold and exhaust fasteners.  For the flange gaskets, I
usually apply the High-Temp Red-RTV form-a-gasket sealant.  I vulcanizes at
room-temp, yet remains rubbery at extreme temps and won't blow out.  Never
have exhaust leaks with the stuff.

 

I have used and seen used blue or black form-a-gasket sealant and/or RTV
sealants on valve cover gaskets.  I find however, if the surface is good, the
permatex liquid works better and is easier to clean-up and redo if the cover
is pulled later.  Then you just brush on some more and bolt down again.  No XS
to clean up.  Sometimes, I need to use the blue RTV around the front cam seal
area, but rarely and the two RTV and Permatex goo can co-exist.

 

Ben

 

[Date: Wed, 28 Jun 2006 08:01:05 EDT

From: DGraber460 at aol.com

Subject: Gasket sealant?

To: s-car-list at audifans.com

Cc: quattro at audifans.com

Message-ID: <481.3ba4320.31d3c981 at aol.com>

Content-Type: text/plain; charset="US-ASCII"

 

What is the collective list wisdom and consensus on using gasket sealants when
assembling an engine?

This is directed to a WX 10V, mainly concerning oil pan, and the front and
rear main seal carriers.

Use it (and which one/what type) or let the gaskets do their job  solo?

I am sick and tired of a messy engine bay, and now that it's out and  getting
cleaned up I would like it to stay that way! At least for a while.

 

Dennis

Denver]