Valve Cover Gaskets
Mopar Performance steel core rubber. They are not cheap but they will be the last valve cover gaskets you will buy for that engine. They last forever....unless some dumbass rips them up intentionally.
Dis bees dem rat cheer.
http://www.summitracing.com/parts/dcc-5249581/overview/make/dodge
They are also one of the FEW valve cover gaskets that will seal the old style LA valve covers to Magnum heads.