Cometic Gaskets ?

[Jmunk]

I'm doing some gaskets on a long block I have before I drop it in. I'm looking at the Cometic timing cover gasket which is rubber with a metal core. Anyone have any experience with them. I wanna drop this in and hopefully not have to touch the gaskets again for a LONG time. Also thinking about the Ford Racing one piece oil pan gasket, also rubber with a metal core.

 

[Shaolin Crane]

i use to use cometic on all my jetski and sport bike engine builds, they would hold up to 10k rpm easily and i never had an issue with them, as far as a timing cover gasket anything should be ok really

 

[90lxcoupe]

if you install a timing cover gasket right you should have no need for anything more than a paper gasket