Lochinvar & A.O. Smith 100063422 Gasket 322838-753 The 1" Union NPT x

The 1" Union NPT x 1" Female NPT connection allows for simplified inline maintenance

Operating on 24V power

Seamless OEM Integration: Engineered by Nortek Global HVAC for Reznor

removing the old body weld assembly

Lochinvar & A.O. Smith 100063422 Gasket 322838-753 The 1" Union NPT xThe Lochinvar & A. O. Smith 100063422 Gasket is a critical OEM replacement part designed specifically for sealing sight glass assemblies in high efficiency commercial boilers and water heaters. Engineered to maintain a gas tight seal under varying thermal loads, this sight glass gasket ensures that combustion monitoring remains safe and efficient. As a genuine 100063422 component (formerly 211866 000), it provides the exact fit required to prevent