this post was submitted on 28 Sep 2023
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Food grade silicone does exist. The question is not if it's safe, but which is safe.
I would recommend motor silicone, since it's often rated for 300 C. The surface being sealed should be scratched or sanded for better adhesion. After it has fully cured (several days), one should probably do about ten "test boils" to flush out anything that might seep into water.
Good points, thanks!
Also, make sure it is rated for the higher temperature.