Weldless Kit for Kettle Thermometer - The Weldless Kit contains all the necessary parts to install the Kettle Thermometer into your favorite brewing vessel with a secure, water-tight seal. It includes a 1/2" Stainless Steel Locknut, Stainless Steel Washer, and a Silicon O-Ring. Installation: Drill a 7/8 inch hole in the side of the vessel. Fit the Kettle thermometer into the hole with the washer on the outside of the vessel wall and the Locknut and O-Ring on the inside.