though the gasket should be inspected regularly for wear

Unlike automatic switches

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

Does this fit all PG9 series furnaces

The Heil Quaker ICP 1065295 Limit Switch is a critical OEM replacement part designed for precision thermal regulation in residential and commercial furnaces

McDonnell & Miller 323300 Head Gasket though the gasket should beThe 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