As a critical OEM York replacement part

As an industry-standard replacement 2" gasket

The Packard A63806 is strictly CW

high manifold gas pressure

including models like the VP526A1050 and VP526A1100

Lennox 98M86 Rollout Switch As a critical OEM YorkThe Lennox 98M86 Rollout Switch is a critical furnace safety limit designed to monitor burner temperatures and prevent hazardous flame rollout conditions. This thermal rollout switch features a 350 degrees F actuation point with a manual reset mechanism, ensuring that a technician must inspect the combustion area for heat exchanger breaches or venting issues before the system becomes operational again. As a Single Pole Single Throw (SPST) component,