ML mineral insulated MgO probes are a replacement for the MW Industrial assemblies.  Probes are available in ASTM E 230 type J, K, T, E or N in .125”, .188” or .250” diameters.  Available in 304, 310, 316 stainless steel or alloy 600 sheath materials and feature a spring for spring loading the sensor into the bottom of a thermowell.