Chicago Faucets 243.391.AB.1
The Chicago Faucets 243.391.AB.1 is a genuine OEM HyTronic® Spout Tube O-Ring Seal. This specialized rubber component is a critical maintenance part used to create a watertight seal between the internal spout tube and the faucet body in HyTronic® and E-Tronic® series electronic faucets. Over time, original O-rings can become brittle or compressed due to mineral buildup and temperature fluctuations, leading to leaks at the base of the spout. This replacement seal is manufactured to exact factory specifications to restore the integrity of the water path and prevent under-deck water damage.
- .239" inner diameter x .070" thickness
- Black with red identification mark
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