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The A.O. SMITH 100338896 is an EPDM condensate trap gasket designed for use in condensing water heater and boiler applications. This gasket creates a watertight seal at the condensate trap assembly, preventing acidic condensate from leaking at the trap connection point. EPDM (ethylene propylene diene monomer) rubber is the appropriate material for this application due to its resistance to acidic condensate and wide temperature tolerance. Installation is typically performed by licensed plumbers or HVAC technicians during routine maintenance, trap replacement, or system servicing.
This gasket is used in residential and light commercial condensing water heater systems where a condensate trap is required to collect and drain acidic condensate produced during high-efficiency combustion. It seats at the condensate trap interface to maintain a sealed drainage path. Replacement is commonly needed when the existing gasket shows signs of degradation, cracking, or leaking around the trap assembly.
Designed as an OEM-style replacement condensate trap gasket for A.O. SMITH condensing water heater and boiler systems. Refer to the equipment service manual or A.O. SMITH parts lookup to confirm fitment for a specific model.
Installation should be performed by a licensed plumber or qualified HVAC technician. Before servicing the condensate trap, shut off the appliance and allow the system to cool. Ensure the mating surfaces are clean and free of debris before seating the new gasket. Follow local plumbing codes and the manufacturer service documentation for proper reassembly procedure.
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