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The A.O. SMITH 100338897 is a flame rod gasket designed to seal the flame rod assembly in water heater combustion systems. The flame rod is a critical sensing component that confirms burner ignition and signals the control system to maintain or interrupt gas flow. This gasket maintains the integrity of that assembly by preventing combustion gas leaks at the rod penetration point. It is a direct replacement component installed by licensed plumbers, HVAC technicians, and water heater service professionals during routine maintenance or after gasket failure.
This gasket is suited for residential and light commercial water heater applications where the flame rod assembly requires resealing. It is typically installed during burner service calls or when evidence of combustion gas leakage is found around the flame rod penetration. Using the correct OEM-specified replacement gasket ensures a proper seal and maintains safe combustion system operation.
Designed as an OEM-style replacement flame rod gasket for A.O. SMITH water heater combustion assemblies.
Installation should be performed by a licensed plumber or qualified HVAC technician. Shut off the gas supply and allow the unit to cool completely before disassembling the flame rod assembly. Inspect the flame rod and surrounding fittings for wear or damage before installing the new gasket. Follow all applicable local codes and manufacturer service documentation when reassembling the combustion system.
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