McDonnell & Miller 304100 Head Gasket Differential expansion

Differential expansion

Combustion Stability: Maintains the specific venturi effect required for proper exhaust scavenging and reliable pressure switch closure

This genuine Goodman furnace limit switch features a compact design with high-conductivity terminals for reliable electrical continuity in high-vibration HVAC environments

This is the individual 8-inch high-tension ignition wire

Proper installation ensures the motor exits the start winding cycle efficiently

McDonnell & Miller 304100 Head Gasket Differential expansionThe McDonnell & Miller 304100 Head Gasket (Model F 26) is a critical sealing component engineered specifically for high performance boiler water feeders and low water cut off systems. As a veteran grade replacement part, this F 26 head gasket is designed to provide a high integrity, leak proof seal between the water feeder body and the head mechanism, ensuring system pressure remains constant and prevents intermittent dry firing or boiler scale