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A great way to add a thermowell to your Speidel plastic fermenter. The thermowell uses the stock speidel spigot lock ring and gasket.

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.