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The Goodman B1796632 Seal and Nut (3/8") is a genuine OEM sealing kit for the 3/8-inch refrigerant fitting on Goodman/Amana ARPF182416BA air handler coils. This seal-and-nut combination ensures a leak-tight mechanical joint at the flowrator/refrigerant connection. Over time seals harden and nuts gall, leading to slow refrigerant leaks and reduced cooling capacity — replacing them during any service keeps the connection tight and reliable.
The seal material and nut thread pitch must match the fitting exactly to achieve a refrigerant-tight joint. Mismatched generic seals are a leading cause of nuisance leaks. The genuine OEM B1796632 guarantees the correct material durometer and thread fit for a dependable seal.
Advanced — professional recommended. While the seal and nut themselves install with a wrench, the joint is part of the refrigerant circuit. Opening it requires proper refrigerant recovery, evacuation, and recharge by an EPA-certified technician. Always replace the seal whenever the fitting is broken loose.