Lochinvar & A.O. Smith 100110898 Gasket

The 100110898 Gasket is a critical OEM replacement component designed for high-temperature sealing in Lochinvar and A.O. Smith burner assemblies. This 3.75-inch silicone burner gasket is engineered to maintain a pressure-tight seal between the burner flange and the combustion chamber, preventing flue gas leakage and ensuring proper manifold pressure. Constructed from high-grade, heat-resistant silicone, it withstands the thermal cycling common in condensing water heaters and commercial boilers. When performing routine maintenance or replacing a hot surface igniter, replacing this gasket is industry standard to prevent CO leaks and maintain combustion efficiency. This HVAC replacement part is compatible with various Knight and Shield series boilers, offering superior chemical resistance and compression set properties compared to generic alternatives. Accurate fitment is essential for HVAC burner maintenance to ensure the integrity of the combustion seal during high-fire operation.

• High-Temperature Durability: Specifically formulated silicone handles extreme thermal loads without hardening or cracking.
• OEM Precision Fit: Ensures 100110898 burner flange alignment for a leak-free combustion path.
• Chemical Resistance: Designed to resist degradation from combustion byproducts and condensate.
• Critical Safety Component: Essential for preventing flue gas recirculation and ensuring safe appliance operation.

When should the 100110898 burner gasket be replaced?
This gasket should be replaced whenever the burner head is removed for inspection, or if there are visible signs of compression set, tearing, or soot marks around the flange.

Is this gasket compatible with A.O. Smith Cyclone models?
Yes, this 100110898 OEM gasket is a standard specification for several A.O. Smith Cyclone and Lochinvar high-efficiency commercial units requiring a 3.75-inch seal.

Can I use RTV sealant instead of this gasket?
No. Using liquid sealants can interfere with the burner's seating and potentially contaminate the combustion chamber. Always use the specified silicone burner gasket for a reliable mechanical seal.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.