A quick disconnect thermocouple with compacted MgO insulation employing a glass-filled, nylon connector directly on the sheath. This specific J Type T21 Thermocouple Probe with attached connectors is a molded on mini-plug. It is ungrounded and the probe length is 18”. The probe diameter is .125” (1/8”) with 304 Stainless Steel. The connector max temp rating is 525F (274C) and the probe max temp rating is 1650F (900C).