Lochinvar & A.O. Smith 100061541 Gasket

The Lochinvar & A.O. Smith 100061541 Gasket is a critical OEM replacement part designed for high-performance hydronic heating systems and commercial boilers. This header gasket (part number 210779-000) is engineered to provide a robust, pressure-tight seal within the waterways and combustion chamber interfaces of Lochinvar Power-Fin and A.O. Smith Legend series units. High-output copper tube boilers and volume water heaters rely on these precision-cut gaskets to prevent bypass leaks and maintain the integrity of the heat exchanger header assembly. By ensuring a flush fit, this component optimizes thermal efficiency and prevents the escape of combustion byproducts or heated fluids. For veteran contractors, the 100061541 represents a standard maintenance item for Lochinvar LB/LW 500-1000 models. Proper seating of this gasket is essential during manifold service or tube bundle inspections to avoid system depressurization. This part is a direct factory-authorized component, ensuring material compatibility with the high-temperature environments typical of industrial hot water supply systems.

• Critical System Sealing: Specifically designed as a header gasket to eliminate leaks in high-pressure commercial boiler applications.
• Precise OEM Fit: Cross-referenced with A.O. Smith part 210779-000 for a perfect seal replacement without modification.
• High-Temperature Durability: Constructed from professional-grade materials capable of withstanding the thermal cycling of Legend series boilers.
• Performance Restoration: Essential for maintaining peak AFUE ratings and operational stability in hydronic heating loops.

Common Questions

Is the 100061541 gasket compatible with all Lochinvar models?
This header gasket is primarily utilized in the Lochinvar Power-Fin and A.O. Smith Legend (LB/LW) models, specifically in the 500, 750, and 1000 Series 300-301 units. Always verify your specific replacement parts list for exact matching.

Should I use silicone sealant with this gasket?
According to standard HVAC technician field practices and manufacturer diagrams, a high-temperature silicone sealant is often required to secure the header gasket to the surface during the reassembly of the housing. Refer to your technical manual for specific application instructions.

When should this gasket be replaced?
A gasket replacement is mandatory whenever the heat exchanger header is opened for inspection or when signs of weeping or carbon tracking appear around the manifold flange.

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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.