Mark Rosenbaum
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There are two types of rubber gasket. The black ones squirm a bit and generally require a sealant to stay put -- but the ones on my car have been in place, with no known leaks, for over 5 years now. The red-orange ones are said to be a bit easier to install and to seal better, but IIRC they cost more. For both types, the key to a successful installation seems to be making sure the cam cover bolts and their threaded holes in the cam carriers are clean, dry, and absolutely oil-free, the Seloc washers are in good condition, and that the bolts for a cover are all tightened to the same torque.
Don't use the old dark composite ('paper') gaskets. They are almost impossible to install correctly and will never seal properly -- you can glue them in place top and bottom, and seal the edges, and they will still leak.
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