For technicians service-managing older hydronic systems

For applications requiring temperature and pressure (T&P) protection

ensuring long-term field reliability in demanding environments

ensuring the control circuit closes only when the appropriate vacuum or draft is established

Enhanced System Stability: Designed to handle inductive loads common in boiler ignition sequences and fan control applications

Lochinvar & A.O. Smith 100208762 Gasket L99H008 For technicians service-managing older hydronicThe Lochinvar & A. O. Smith 100208762 Gasket is a critical high temperature seal designed specifically for burner sight glass assemblies in high efficiency condensing boilers and water heaters. As a direct OEM replacement part, it ensures a gas tight seal between the observation port and the combustion chamber, preventing dangerous flue gas leakage and maintaining proper combustion cavity pressure. This industrial grade gasket is engineered to