Thermowell bulkhead

This is a bulkhead for a 1/4" ID thermowell to allow a DS18B20 temperature sensor to sit inside your carboy. An example thermowell is here: https://www.brewershardware.com/16-Stainless-Steel-Thermowell-TWS516-16.html
Adding a couple of rubber gaskets forms an airtight seal. Picture shows the bulkhead with a 5/8" drilled Fermonster lid. Still need to add the fermentation lock hole.