Lochinvar & A.O. Smith 100146604 Gasket Strip

The Lochinvar & A.O. Smith 100146604 Gasket Strip is a critical OEM replacement part engineered for high-temperature sealing in commercial pool heaters and heavy-duty HVAC equipment. Measuring 45 inches in length, this Manning Glass gasket is constructed from high-grade fiberglass material to withstand the rigorous thermal cycles of Lochinvar Copper-Fin II models, specifically ranging from CP 991 to 2071. It serves as a direct cross-reference for part numbers GKT3408, GKT2408, and 100146517, ensuring a precise fit without the need for field modifications. By providing a robust thermal barrier, this fiberglass gasket tape effectively prevents flue gas leakage and maintains combustion chamber pressure, which is vital for system efficiency. For technicians servicing EnergyRite ER residential units or large-scale CHN 1800 boilers, utilizing this genuine Lochinvar gasket is essential for restoring airtight integrity and preventing costly downtime caused by seal failure.

Key Benefits

• Exact OEM Compatibility: Perfectly fits Lochinvar Copper-Fin II CP 991-2071 and A.O. Smith commercial units, replacing GKT3408.
• High-Temperature Durability: Engineered with Manning Glass fiberglass to maintain structural integrity under extreme heat.
• Precision Sealing: The 45-inch gasket strip provides a continuous, leak-proof barrier to optimize heating system efficiency.
• Simplified Maintenance: Pressure-sensitive design allows for professional-grade application during routine boiler service.

Common Questions

This gasket is specifically designed for Lochinvar Copper-Fin II commercial pool heaters (Models 991 to 2071) and is often found in EnergyRite residential pool heater assemblies.

Yes, the 100146604 is the current manufacturer-authorized replacement for the older GKT3408 and GKT2408 part numbers.

Manning Glass is utilized because of its superior thermal resistance and flexibility, which are necessary to prevent gas bypass in high-output HVAC combustion chambers.

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.