Lochinvar & A.O. Smith 100190826 Gasket

The Lochinvar & A.O. Smith 100190826 Gasket is a critical OEM replacement part engineered specifically for sealing the burner-to-combustion chamber interface in high-efficiency condensing boilers and commercial water heaters. For any veteran technician, maintaining the integrity of this seal is paramount to preventing combustion gas leaks and ensuring proper fuel-to-air ratios. This burner gasket kit is designed to withstand the extreme thermal cycling and high-temperature environments found in the Lochinvar Knight and A.O. Smith Cyclone series, including popular models like the FBL4000 and FBN4000. When performing a teardown or annual heat exchanger cleaning, replacing this gasket is a mandatory step to avoid nuisance lockouts and CO leakage. The 100190826 provides a high-density, leak-proof barrier that optimizes thermal efficiency and protects the burner assembly from bypass air. Utilizing genuine OEM components like this kit ensures precise fitment and matches the original manufacturer specifications for HVAC combustion safety and long-term equipment reliability.

• Precision Fitment: Engineered as a direct OEM replacement for Lochinvar and A.O. Smith commercial units, ensuring a perfect air-tight seal during installation.
• High-Temperature Durability: Constructed from professional-grade materials capable of withstanding the intense heat of low-NOx burner operations without degradation.
• Combustion Optimization: Prevents excess air infiltration, which is vital for maintaining steady flame signals and peak boiler efficiency.
• Safety Compliance: Eliminates the risk of hazardous exhaust gases escaping into the mechanical room by sealing the burner mounting flange.

When should this burner gasket be replaced?
Standard industry practice dictates replacing the 100190826 gasket every time the burner is removed for inspection, cleaning, or a preventative maintenance kit installation to ensure a fresh compression seal.

Is this gasket compatible with all Lochinvar Knight models?
This specific burner kit is designed for higher-capacity commercial models like the FBL4000 and FBN4000. Always verify your specific model and serial number before ordering to ensure correct burner assembly compatibility.

What are the signs of a failing burner gasket?
Technicians should look for scorching around the burner flange, irregular combustion analyzer readings, or physical signs of brittleness and cracking during a visual inspection of the gasket material.

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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.