Thermocouple, Type J, 0-370¿C, 24 Gauge, 1/8" OD, 6" Long Stainless Steel Probe, 48" Long Fiberglass Insulated Duplex Lead with Stainless Steel Overbraid for Liquid Immersion. Type ¿J¿ thermocouple (black) for use with oil baths or other liquid immersion applications. Thermocouple is supplied with a mini plug and a insulated and stainless steel overbraided cord. Thermocouples can be used to 370¿C.