When I refurbished my machine 2 years ago, I obtained some food-grade (H1-rated for incidental food contact) anti-seize from the evilbay to apply on the boiler studs. It's metal free and was supposed to be odourless (but does have a very faint distinctive odour if you pay attention). The name was CRC SL35905. Not sure if it works as I haven't had the need to disassemble the boiler yet... there's also plenty other food-grade anti-seize but they all usually come in a big tub. Point is I think it's worth getting the food grade stuff just in case, although for boiler studs the chance of contact/backflow is minimal (you might accidentally smear it in the boiler surface or in the water path/tubes though).
For o-ring, gaskets or any other parts that come in contact with water (for lubrication purpose, a separate function from seize prevention), I have been using Dow Corning/Molykote 111 for years and highly recommend it. That's also H1-rated, works well and is completely odourless.
For o-ring, gaskets or any other parts that come in contact with water (for lubrication purpose, a separate function from seize prevention), I have been using Dow Corning/Molykote 111 for years and highly recommend it. That's also H1-rated, works well and is completely odourless.



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