Johnson Controls T-4000-2644 Cover this industrial-grade elastomeric seal provides

this industrial-grade elastomeric seal provides superior resistance to chemical degradation and thermal cycling

meaning it breaks the electrical circuit if the plenum temperature exceeds 140°F and restores continuity once it drops to 110°F

Under full rated torque

this is the official replacement for the 47-21711-06 and is widely used across Rheem and Ruud gas furnace platforms as long as the 3-inch insertion depth and temperature ratings match your original specifications

Johnson Controls T-4000-2644 Cover this industrial-grade elastomeric seal providesJohnson Controls T 4000 2644 Gold Plastic Cover, Vertical, No Thermometer or Setpoint Window, Johnson Controls Labeled