As we previously described, the pan comes in two parts - the wide base and detachable sides connected with a latch for a tight seal. Once you seal the pan, use it regularly, and untie the sides after the baking process to set your dessert free. When using a silicone pan, make sure you firmly wrap the ring around the base before using the ring to seal the bottom. Moreover, ensure that every side of the silicone ring clings appropriately to the bottom. If the pan doesn't leak, you did a great job! If it does, you need to start over.