Industrial Beaded Base Metal Thermocouple assemblies are designed to mate with a pipe well. Typical assemblies include nipples and pipe unions and are mated with connection heads to protect the sensor from dirt and moisture. These assembles allow for replacement of the thermocouple while the wells are in place.  Available in ASTM E 230 type J or K, 8 gauge, 14 gauge or 20 gauge.  Choose from twisted or butt welded junctions round or oval insulators.