Do I need to immerse silicone molds?

Hello,

Any utensil made of silicone is exempt from the immersion of utensils.

Sources: Just like plastic utensils - as written in Responsa Yabia Omer Volume 4 (Yoreh De'ah 8) and in Responsa Yechave Da'at Volume 3 (Section 60) and in the book Hilchot Olam Volume 7 (pages 240-241) that they are exempt from immersion, and one who is stringent upon themselves to immerse them without a blessing, a blessing will come upon them.

With blessings,

Hillel Meirs