What gasket sealers do you use?

[paulo57509]

Like some of the others, I too don't use any extra sealants. However, I will use stuff to hold gaskets in place during installation. I guess, in some cases the holding agent could be classified as a sealant. I'll also use sealants when the factory service manual calls for them.

In general, my usual holding agent is a real thin coating of Permatex No. 2, followed a close second by black RTV silicone.

Be careful of the type of RTV silicone you use. Some will contaminate O2 sensors. Also, I was taught to keep Permatex away from auto transmission pans.

I think with any kind of sealant, less is better than more.

 

[Tony Fullerton]

A friend e-mailed me a page from this site on the subject of sealants. As an ex-military vehicle engineer I have used a variaty of sealants, which when used as directed almost always work. I now work for Hylomar Ltd in the UK. We specialise in keeping the lube where it should be, inside the componant. There has been a lot of for and against messages regarding ours and other sealants, and we would like to offer all your members access to our experience. Hylomar is now the name of our Company and not just a product name. The Permatex HPF that many people seem to complain about is a different product to the Hylomar Universal Blue. In the UK we call it Hylomar Advanced Formulation and it is a compromise sealant that is solvent free, non-setting and non-hazardous.
I appreciate the problems that Tim H is experiencing and would like him to make contact to offer some help in aoolication. Should anyone require any help or advise in sealing technology, please contact me.