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The Goodman B1796632 is a genuine OEM 3/8-inch seal and nut assembly for the ARUF042-00A-1B air handler. This small but critical fitting creates the leak-tight mechanical seal where tubing or a metering connection passes through the coil assembly. The correct seal and matching nut maintain the system's pressure integrity and prevent refrigerant or condensate leakage at the joint. Worn or missing seals are a common source of slow leaks during coil or flowrator service.
The genuine Goodman OEM seal and nut are sized to the exact thread pitch and bore of the ARUF042 connection. Generic hardware risks cross-threading and an imperfect seal. Since this part protects against refrigerant and water leaks, OEM is recommended.
Easy to Moderate (2/5) — A straightforward fitting replacement, though it is typically serviced alongside sealed-system or coil work. Professional installation recommended when refrigerant lines are involved.