Silicone bulkheads - gasket or not

[mark]

I put a thin film on both sides of the gasket, yes it probably helped in sealing but does seem to make the gasket want to slide out even when tightening slightly. Bit on the threads will help lock the nut.

[albert_dao]

Putting a thin seal of silicone on the gasket is just a set up for leaks down the line. The silicone will wear, as it is apt to do, forming channels between the glass and the gasket.

[Veng68]

how about putting the gasket on normally and then siliconing around the bulkhead?

Cheers,
Aquaman

[Quagmire]

Ive never siliconed a bulkhead.But when I use it on an engine,I run a good sized constant bead.Tighten up the bolt untill its just pushing into the silicone,then let dry.After it dries I tighten up the bolt.This way the silicone works as a gasket.Dont see why it wouldn't work the same on a tank.So far on a tank Ive found the gaskets work well enough alone.