Features: 1、Materials: 200°C High-Temperature Resistant Copper Wire.Equipped with premium copper wires that tolerate temperatures up to 200°C, this thermocouple maintains stable signal transmission even in high-heat environments. It avoids wire aging or melting caused by extreme temperatures, guaranteeing consistent safety protection. 2、This thermocouple is specifically engineered to fit the Propane Natural Gas Thermocouple Replacement for Mr Bubby Heater Pilot Burner F273401 73404 Pilot Assembly —a perfect replacement part that ensures seamless integration without extra modifications, saving you time on installation and compatibility checks.Used on Heater MH9B MH9BX MH18B ,Compatible for Dewalt Small Propane Heater 3、Designed to match th.