Nutech Engineers offers Rigid Tube Thermocouple Assemblies. Nutech Engineers is an ISO 9001:2000 accredited company. The Rigid Tube Thermocouple Assemblies comes with mounting devices, compression fittings, or the bayonets cap and spring assembly, are in the following order number model system description. Thermocouple wire is duplex insulated, temperature rated to 900° F Except for Type T Assemblies, which are not suitable above 700° F. These temperatures do not apply to the cold end termination. Standard Junction style is closed and grounded. Type K has a welded tip. All the other tips are silver soldered tipped probes for faster response.