A.O. Smith 9007138005 Burner Flange Gasket Kit 300/400 Series Replace 100111744

The A.O. Smith 9007138005 Burner Flange Gasket Kit replaced by model 100111744 is suitable for the 300/400 series water heaters. This gasket kit is an essential sealing system in the interface between the burner and boiler to prevent the leakage of combustion products. Keeping the joints closely fitted it increases the reliability of HVAC systems, minimizes leakage, and increases efficiency. The gasket is particularly useful during normal maintenance and it also increases the duration of the water heater and general system efficiency.