Exhaust gaskets on RWC - does perfect seal hurt?

[boatrboy]

After removing and inspecting manifolds, I have read several posts which recommend assembling dry with the new Mercruiser gaskets. (I am talking about manifold to spacer to elbows here, as I realize manifold to head is dry).

The original Mercruiser manual states using perfect seal. Somewhere I read there was a tsb on putting them together dry. Since I am a little paranoid on this issue with water leaking on me a few years back, I was wondering if there is any negitive to using perfect seal with the new style gaskets?

 

[scoflaw]

Depends on what gasket. Def. no on the graphite ones.

 

[boatrboy]

Depends on what gasket. Def. no on the graphite ones.

Thanks scoflaw.
The Mercruiser gaskets are now the graphite ones. This is the reason for my post. I am trying to understand if the sealant can be used in combination and why or why not.