A thermocouple assembly for a continuous casting mold. The assembly includes a hollow body one end of which has external pipe threads whereby the hollow body may be sealingly threaded into a threaded cavity provided in the outer surface area of the mold wall. The hollow body is sealed in the water jacket by means of a sleeve received over the hollow body. A seal is placed between the hollow body and the sleeve and a second seal is placed between the water jacket and the hollow body. A constantan thermocouple is received in the hollow body and is maintained in direct contact with the mold by either a compression spring or by being threaded into the mold.
