Lochinvar & A.O. Smith 100110705 Gasket

The Lochinvar and A.O. Smith 100110705 Burner Gasket is a critical high-temperature seal designed for commercial boiler and water heater combustion chambers. This OEM replacement part, formerly identified by part number GAK2018, ensures a gas-tight seal between the burner mounting plate and the heat exchanger. Engineered for high-cycle reliability, the 100110705 prevents combustion byproduct leakage and maintains proper manifold pressure during high-fire operation. Technical consistency is paramount when servicing Lochinvar Knight and A.O. Smith Cyclone series units, where precise air-to-fuel ratios are required. Utilizing this specific fiber-reinforced graphite gasket prevents the common issue of burner plate warping caused by thermal bypassing. Always inspect for carbon buildup on the mating surfaces before installation to ensure the combustion chamber seal achieves maximum compression and prevents CO leakage into the mechanical room.

Key Benefits for Technicians

• Direct OEM Fit: Ensures exact compatibility with Lochinvar GAK2018 specifications, eliminating the need for field modifications.
• Thermal Resistance: Rated for extreme temperatures typical of high-efficiency condensing boilers and commercial water heaters.
• System Safety: Prevents the escape of flue gases, maintaining the integrity of the combustion seal.
• Ease of Installation: Die-cut configuration allows for rapid alignment with existing burner mounting bolt patterns.

Common Technical Questions

When should the 100110705 gasket be replaced?
It is standard practice to replace the burner mounting gasket during every annual heat exchanger inspection or whenever the burner plate is removed for cleaning. Reusing a compressed gasket can lead to improper sealing and flame rollout issues.

Is this gasket compatible with A.O. Smith Cyclone models?
Yes, the A.O. Smith 100110705 is the direct replacement for various Cyclone models where the burner assembly requires a high-density seal to maintain pressurized combustion.

Does this part replace the Lochinvar GAK2018?
Correct. 100110705 is the current manufacturer part number that supersedes the legacy Lochinvar GAK2018 designation.

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.