Koshering a Utensil with a Silicone Part
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Question
A "samovar" used on Shabbat on the hot plate, with chametz placed on top in a utensil for heating, and it is possible that some sauce dripped here and there on the outside of the samovar. The samovar is made of aluminum, and I have boiled it. The tap is mostly metal, but inside there is a silicone part that actually seals the tap and is in direct contact with the water. The question: Is koshering by boiling effective for silicone?
Answer
Hello,
It is not possible to kosher a utensil that has a part made of rubber or silicone.
Source
According to the instructions of the Gaon, Rabbi Avraham Fried, shlita