Lochinvar & A.O. Smith 100208105 Gasket

As a field-tested Lochinvar & A.O. Smith 100208105 Gasket, this critical gas valve gasket is engineered to maintain a hermetic seal between the gas valve and the venturi or blower assembly. Designed for high-efficiency commercial boilers and water heaters, this OEM replacement part serves as a direct substitute for legacy part numbers 100146470 and GKT2050. It is a vital component for technicians servicing Lochinvar Power-Fin (PB/PF 1501-2001), Armor (AWN/APN), and Crest series units. This HVAC combustion chamber gasket prevents dangerous fuel-air mixture bypass and ensures precise manifold pressure regulation during the ignition cycle. Constructed from heat-resistant elastomers, it withstands the thermal cycling common in A.O. Smith commercial water heaters and boiler combustion systems. Regular replacement during annual maintenance prevents vacuum leaks that cause hunting, resonance, or "flame out" errors. Ensure the mating surfaces are clean of old material before installing this furnace gas valve seal to achieve optimal atmospheric integrity and peak combustion efficiency.

• Broad Compatibility: Fits an extensive range of Lochinvar and A.O. Smith models including Power-Fin, Armor, Crest, and Knight XL systems.
• Combustion Stability: Eliminates air infiltration at the venturi interface, ensuring consistent ignition and steady burner flames.
• OEM Precision: Manufactured to 100208105 technical specifications for a perfect seated fit, preventing the need for field modifications.
• Durable Material: High-grade composite resists degradation from gas additives and frequent high-temperature cycles.

When should I replace the 100208105 gas valve gasket?
Technicians should replace this gasket whenever the gas valve is removed for service or if there are visible signs of brittleness or cracking during routine combustion analysis.

Will this gasket fix a "No Ignition" or "Soft Lockout" error?
If the lockout is caused by an improper fuel-to-air ratio due to a leak at the gas valve or venturi connection, installing a fresh Lochinvar gasket will restore the necessary seal for proper pressure regulation.

Is this a direct replacement for the GKT2050?
Yes, the 100208105 is the current manufacturer-approved replacement for the obsolete GKT2050 and GKT2050K part numbers.

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.