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For years I’ve been using a paste-like sealant, brand named Rector Seal. A small amount is dabbed onto the threads. Never been a problem using it on my anode rod.

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Hi Mike, In your post about Anode Rods you don't address the question about the difference between aluminum tanks and steel tanks. Aluminum tanks (Atwood/Dometic) don't come with an anode rod. Steel tanks (Suburban) do come with an anode rod which needs to be replaced periodically.

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True that. The same holds true for residential water heaters. The key takeaway is that if your water heater has an anode rod, then you should use Teflon tape on the threads of the replacement anode rod.

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Hey Mike. How about propane only water heaters? My rigs is 24 years old and as far as I can tell, never had an anode installed. There is just a plastic plug. Chuck

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