Lochinvar & A.O. Smith 100233678 Fan Gasket

As a field technician, you know that maintaining a precise seal in the combustion assembly is non-negotiable for system safety and peak thermal efficiency. The Lochinvar & A.O. Smith 100233678 Fan Gasket is a critical OEM component engineered to provide a high-temperature seal between the combustion fan and the blower transition or venturi assembly. Designed specifically for use in Lochinvar Knight boilers and high-efficiency A.O. Smith commercial water heaters, this replacement combustion fan gasket (formerly identified as part GKT2023) prevents the escape of dangerous flue gases and ensures a stable air-to-fuel ratio within the burner. Its heat-resistant composition is built to withstand the rigors of modulating firing rates without degrading. Whether you are performing annual preventative maintenance on an ARMOR water heater or a Sync boiler, installing this genuine OEM HVAC part ensures the unit meets its original factory specifications for static pressure and emissions control.

• Direct OEM Compatibility: Engineered for a perfect fit on Lochinvar and A.O. Smith commercial heating units, replacing obsolete part number GKT2023.
• Critical Safety Seal: Eliminates the risk of exhaust leakage at the fan interface, protecting the mechanical room from carbon monoxide.
• High-Temperature Durability: Manufactured with industrial-grade materials that maintain their structural integrity under the intense thermal cycling of condensing boilers.
• Optimized Combustion: Helps maintain precise internal cabinet pressure, ensuring the blower assembly delivers the exact CFM required for clean combustion.

Is the 100233678 fan gasket a universal HVAC part?
No, this is a manufacturer-specific component designed for Lochinvar and A.O. Smith equipment. Always verify your specific model and serial number against the replacement parts list before installation.

When should this fan gasket be replaced?
In accordance with professional service standards, the combustion fan gasket should be inspected during every annual maintenance call and replaced whenever the fan assembly is moved or if any signs of compression set or brittleness are detected.

Does this seal require additional RTV silicone or adhesive?
This OEM 100233678 gasket is designed to create a mechanical seal upon compression. Adding unauthorized sealants can interfere with the gasket’s performance and eventually compromise the combustion assembly.

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.