... Material For Choice: Ceramic Insulator Body: 95% Alumina, Steatite with glazed or no glazed layer Electrode Pin/Rod: OCR25, OCR27, SUS304, Ni80Cr20 ... - Copper Plated etc. Application for water heater , gas-oven ,boiler and BBQ . HZ-082A flame sensors used for BBQ , gas stove , water heater and boilers