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The Goodman 10254303 Rubber Coupling is the genuine OEM elastomeric seal used in the condensate/drain and inducer assembly of the GCH950703BXAD high-efficiency gas furnace. This small but critical coupling forms a leak-tight, vibration-dampening connection between components. A cracked or hardened coupling leads to condensate leaks, flue-gas seepage, or a whistling induced-draft path that can trip the pressure switch.
The inside diameter and durometer of this coupling are matched to Goodman's tubing so it seals without over-compression. Generic hardware-store grommets often use a rubber compound that hardens or degrades in acidic condensate, causing leaks within a season. The genuine part is inexpensive insurance against water damage.
Easy (1/5). Power down, slip the old coupling off, and press the new one into place. No adhesives or tools required in most positions — just confirm a snug, square seat.