Silicone Sealant And Torqueing Bolts

[Olas]

Originally Posted by heynow
Originally Posted by Olas
silicone is for sealing bathrooms, not cars!



Pretty much every OEM auto manufacturer on the planet would disagree.

Originally Posted by Olas
the secret is to cut a gasket from flexoid gasket paper, and smear a thin skin of hylomar universal blue on both sides of the gasket. it will NEVER leak.



What about when the two joining surfaces have very precise tolerances in relation to each other which a non liquid gasket would interfere with?

with properly flat surfaces like head and block then you dont need a jointing compound. we were talking about diff covers and other surfaces that are not perfectly flat.

 

[4WD]

Yeah, one of the nice things about aftermarket diff covers is a stiff flange with a milled surface.

 

[Olas]

RTV is silicone. Silicone sets, so vibration can cause it to debead and leak.

hylomar is non setting, it stays liquid, so it takes all the vibration you can give it and does not debead and does not leak.