Looking to add a thermowell to your Speidel plastic fermenter? This is the perfect way to do it. This thermowell replaces the airlock on top of your fermenter and uses the standard Speidel locking nut and gasket. The rubber grommet will fit standard 3/8 in. airlocks and the thermowell will accept most temperature probes.

The probe is 12" and will fit most 1/4" digital temp probes.

Please note that while using the stock spigot lock ring and gasket for the thermowell, you will have to use the solid locking cap where the spigot is normally located. In order to use the thermowell and spigot silmultaneously, you will need to purchase a second spigot or lock nut.