
Lochinvar & A.O. Smith 100288877 Blower Gasket
The Lochinvar & A.O. Smith 100288877 Blower Gasket is a critical combustion-side component designed to maintain a gas-tight seal between the fan assembly and the heat exchanger. Engineered for high-efficiency Lochinvar Knight and AQUAS Low NOx commercial boilers and pool heaters, this OEM gasket prevents the leakage of combustion air and flue gases, ensuring the venturi mixing system operates at peak stoichiometric ratios. As an essential part of the blower motor assembly, it is compatible with specific models like the FTX400 and FTX500 series. Field technicians should prioritize replacing this seal during any heat exchanger maintenance or blower removal to prevent air bypassing, which can lead to erratic flame signals or combustion instability. This replacement blower gasket serves as a direct upgrade for legacy part numbers 100146439 and GKT20139, providing the thermal resistance required for continuous high-firing rate applications in hydronic heating systems.
Key Benefit List:- Combustion Integrity: Ensures a precise seal for the Lochinvar 100288877 to prevent hazardous CO leakage and maintain proper air-fuel mixture.
- OEM Compatibility: Specifically engineered for A.O. Smith blower systems, guaranteeing a perfect fit on FTX series heaters without modifications.
- Thermal Reliability: Manufactured from high-grade high-temperature gasket material to withstand the extreme thermal cycling of commercial boiler starts.
- System Efficiency: Minimizes static pressure loss within the induction blower assembly, supporting optimal AFUE performance.
- When should this gasket be replaced? We recommend installing a new 100288877 gasket every time the blower assembly is detached for cleaning or component replacement to ensure a secure seal.
- Does this part fit the APN400 or APN500 models? Yes, this specific blower gasket is the designated OEM replacement for Lochinvar APN400-500 units.
- Can I use a liquid sealant instead of this gasket? No. Use of petroleum-based or "homemade" sealants can damage the combustion chamber components; always use the specified OEM blower gasket.
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.
Original: $27.62
-65%$27.62
$9.67Lochinvar & A.O. Smith 100288877 Blower Gasket
The Lochinvar & A.O. Smith 100288877 Blower Gasket is a critical combustion-side component designed to maintain a gas-tight seal between the fan assembly and the heat exchanger. Engineered for high-efficiency Lochinvar Knight and AQUAS Low NOx commercial boilers and pool heaters, this OEM gasket prevents the leakage of combustion air and flue gases, ensuring the venturi mixing system operates at peak stoichiometric ratios. As an essential part of the blower motor assembly, it is compatible with specific models like the FTX400 and FTX500 series. Field technicians should prioritize replacing this seal during any heat exchanger maintenance or blower removal to prevent air bypassing, which can lead to erratic flame signals or combustion instability. This replacement blower gasket serves as a direct upgrade for legacy part numbers 100146439 and GKT20139, providing the thermal resistance required for continuous high-firing rate applications in hydronic heating systems.
Key Benefit List:- Combustion Integrity: Ensures a precise seal for the Lochinvar 100288877 to prevent hazardous CO leakage and maintain proper air-fuel mixture.
- OEM Compatibility: Specifically engineered for A.O. Smith blower systems, guaranteeing a perfect fit on FTX series heaters without modifications.
- Thermal Reliability: Manufactured from high-grade high-temperature gasket material to withstand the extreme thermal cycling of commercial boiler starts.
- System Efficiency: Minimizes static pressure loss within the induction blower assembly, supporting optimal AFUE performance.
- When should this gasket be replaced? We recommend installing a new 100288877 gasket every time the blower assembly is detached for cleaning or component replacement to ensure a secure seal.
- Does this part fit the APN400 or APN500 models? Yes, this specific blower gasket is the designated OEM replacement for Lochinvar APN400-500 units.
- Can I use a liquid sealant instead of this gasket? No. Use of petroleum-based or "homemade" sealants can damage the combustion chamber components; always use the specified OEM blower gasket.
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.
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Description
The Lochinvar & A.O. Smith 100288877 Blower Gasket is a critical combustion-side component designed to maintain a gas-tight seal between the fan assembly and the heat exchanger. Engineered for high-efficiency Lochinvar Knight and AQUAS Low NOx commercial boilers and pool heaters, this OEM gasket prevents the leakage of combustion air and flue gases, ensuring the venturi mixing system operates at peak stoichiometric ratios. As an essential part of the blower motor assembly, it is compatible with specific models like the FTX400 and FTX500 series. Field technicians should prioritize replacing this seal during any heat exchanger maintenance or blower removal to prevent air bypassing, which can lead to erratic flame signals or combustion instability. This replacement blower gasket serves as a direct upgrade for legacy part numbers 100146439 and GKT20139, providing the thermal resistance required for continuous high-firing rate applications in hydronic heating systems.
Key Benefit List:- Combustion Integrity: Ensures a precise seal for the Lochinvar 100288877 to prevent hazardous CO leakage and maintain proper air-fuel mixture.
- OEM Compatibility: Specifically engineered for A.O. Smith blower systems, guaranteeing a perfect fit on FTX series heaters without modifications.
- Thermal Reliability: Manufactured from high-grade high-temperature gasket material to withstand the extreme thermal cycling of commercial boiler starts.
- System Efficiency: Minimizes static pressure loss within the induction blower assembly, supporting optimal AFUE performance.
- When should this gasket be replaced? We recommend installing a new 100288877 gasket every time the blower assembly is detached for cleaning or component replacement to ensure a secure seal.
- Does this part fit the APN400 or APN500 models? Yes, this specific blower gasket is the designated OEM replacement for Lochinvar APN400-500 units.
- Can I use a liquid sealant instead of this gasket? No. Use of petroleum-based or "homemade" sealants can damage the combustion chamber components; always use the specified OEM blower gasket.
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.












