Type K Mineral Insulated Thermocouple With Threaded Pot. Mineral insulated type ‘K ‘ thermocouple. Highly flexible, sheath can be bent/formed to suit many applications and processes. 2.0mm diameter fast response probe. Insulated hot junction. Probe temperature range -40°C to +1100°C. M8 x 2.0mm pitch threaded pot seal. Colour coded to IEC 584