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The Goodman B1796632 Seal and Nut (3/8 inch) is a genuine OEM sealing kit designed for the Goodman ADPF18241BA evaporator coil and compatible air conditioning units. This assembly creates a leak-tight refrigerant connection at the 3/8" flare or coupling fitting, pairing a precision-molded seal with its matching nut. Worn, hardened, or improperly torqued seals are a common source of slow refrigerant leaks — replacing both the seal and nut together restores a reliable, factory-spec joint.
Genuine Goodman seals are made from refrigerant-compatible elastomer rated for the system's operating pressures and POE/mineral oils. Generic seals may swell, harden, or fail to seat correctly, leading to recurring leaks. The OEM nut guarantees correct thread pitch and torque seating. For sealed-system integrity, OEM is the safe choice.
Intermediate (Pro Recommended). Because the seal sits on the refrigerant side, the system should be recovered before opening the fitting, then evacuated and recharged afterward. The mechanical swap itself is straightforward, but EPA-certified handling of refrigerant is required. Estimated labor: 30–60 minutes.