Carboy Thermowell with Two-hole Silicone Stopper:
Use this carboy thermowell with a digital temperature controller to ensure accurate fermentation temperature control. The stainless steel thermowell is in contact with the beer or wine so you get an accurate reading during the entire fermentation cycle. Use with an airlock.
Recommended for use with fermentation buckets (a #6.5 Silicone stopper fits glass carboys).
The is a #6.5 Silicone stopper with one 3/8" hole for the airlock and one 1/4" hole with the stainless steel thermowell installed.
Our Thermowells are made from seamless 304 stainless steel tubing, Inside Diameter 0.272 inch, Outside Diameter 5/16 inch, Wall Thickness 0.020 inch, Outside Dia Tolerance +/-.005 In.