Rather than using an off the shelf silicone enclosure, the new version will feature custom silicone over-molding. The idea is to better seal the sensors and to adapt the shape so it is better suited for the functionality.
The mold was 3D printed and filled with a food grade clear silicone material. Below is the first test curing.
Here is the finished part straight out of the mold:
Other than some bubbles due to inadequate degassing it turned out really well. A new degassing chamber just arrived and will be used for subsequent tests.