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The A.O. SMITH 100109686 is a replacement cleanout gasket designed for use in water heater service and maintenance applications. A cleanout gasket seals the cleanout opening on a water heater tank, preventing leaks and maintaining a watertight connection at the access port. This part is typically installed by licensed plumbers or water heater service technicians during routine maintenance, sediment flushing, or tank inspection procedures.
This cleanout gasket is suited for residential and light commercial water heater applications where the original factory gasket has deteriorated, cracked, or failed to seal properly. It restores a proper seal at the cleanout port, helping prevent water intrusion and tank corrosion at the access point.
Designed as an OEM-style replacement cleanout gasket for A.O. SMITH water heater units requiring service at the cleanout port.
Installation should be performed by a licensed plumber or qualified water heater technician. Before servicing, shut off the water supply and power or gas to the unit, and allow the tank to cool and depressurize fully. Inspect the cleanout port seating surface for corrosion or damage before installing the new gasket. Follow all applicable local plumbing codes and manufacturer service guidelines during installation.
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