Lochinvar & A.O. Smith 100233660 Gasket

The Lochinvar & A.O. Smith 100233660 Gasket is a critical front header gasket engineered for high-temperature sealing in commercial boiler and water heater applications. This OEM component serves as a precise heat shield gasket, facilitating a high-integrity thermal barrier between the front header and the heat exchanger. Designed for Lochinvar CBL and CHL series models, as well as specific Knight boiler and Power-Fin units, it ensures a leak-proof interface that maintains proper combustion pressure and prevents hazardous flue gas bypass. For technicians performing preventative maintenance on AW, CB, and CW models, utilizing this 1/2" NPT-compatible replacement gasket is standard practice to restore system efficiency and protect internal controls from heat damage. Its durable construction is formulated to withstand the rigorous cycling of modern hydronic systems, ensuring long-term seat reliability in the header assembly.

• High-Temperature Sealing: Composed of specialized materials to maintain a leak-free assembly under extreme thermal loads.
• OEM Compatibility: Exact fit for Lochinvar 100233660 and A.O. Smith boiler specifications, eliminating field modifications.
• Combustion Integrity: Prevents bypass of combustion byproducts, ensuring stable boiler performance.
• System Protection: Acts as a thermal barrier to shield sensitive electronic components from radiant header heat.

Which Lochinvar models use the 100233660 front header gasket?
This gasket is primarily utilized in the CBL, CHL, CB, and CW series, including models ranging from 497 to 2067. It is a standard component in preventative maintenance kits for these high-capacity units.

When should the front header gasket be replaced?
Technicians should replace the 100233660 gasket during any heat exchanger inspection or whenever the front header is removed. Any signs of hardening, cracking, or "blow-by" soot marks indicate immediate replacement is necessary.

Is this gasket interchangeable with aftermarket seals?
While aftermarket options exist, using the genuine OEM 100233660 ensures the correct compression ratio and material compatibility required for ASME-rated equipment.

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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.