Unlike automatic switches

maintaining the HVAC flame rollout switch integrity found in residential gas furnaces

technicians recommend installing a new gasket whenever the head assembly is removed to ensure a positive seal and prevent unexpected system downtime

Does this fit all PG9 series furnaces

Engineered to provide accurate resistance feedback to the integrated furnace control or heat pump logic board

McDonnell & Miller 323300 Head Gasket Unlike automatic switchesThe McDonnell & Miller 323300 Head Gasket (Model 92 68) is a critical replacement component engineered specifically for Series 94 and 194 Low Water Cut Offs and pump controllers. For veteran technicians, this gasket is the standard for maintaining a pressure tight seal between the float chamber and the head mechanism. It is designed to withstand the rigorous thermal cycling and pressure fluctuations common in commercial and industrial steam boiler