It is primarily utilized in Lennox Aire-Flo AF80 and AF90 series gas furnaces

For contractors performing valve maintenance or field retrofits

Standard wires often fail due to the high-heat environment of the burner tray

leave the unused port open to the atmosphere

and warping often caused by constant moisture exposure

Lochinvar & A.O. Smith 100233617 Gasket 321702-401 It is primarily utilized inFor veteran technicians servicing high capacity Lochinvar Knight boilers or A. O. Smith water heaters, the 100233617 Gasket is a critical component for maintaining combustion integrity. Engineered as a large gas air arm cover gasket, this seal is primarily utilized in the gas air arm assembly to prevent dangerous fuel air mixture leaks. This specific part is a direct OEM replacement for legacy part numbers GKT20019, GKT20019K, and 100146349. Measuring