Lennox 21W66 Gasket
The Lennox 21W66 Gasket is a critical OEM replacement component engineered specifically for induced draft assembly sealing in high-efficiency residential and commercial heating units. As a veteran tech knows, a compromised seal at the inducer motor lead to pressure switch trips and flue gas leakage. This draft inducer blower gasket (cross-referenced as LB-106197) is designed to withstand high-temperature combustion environments while maintaining a positive seal between the combustion blower housing and the furnace chassis. Precision-cut to Lennox 21W66 specifications, it features an approx. 4-1/2" diameter opening and overall dimensions of 7-13/16" x 8-1/2" x 1/2", ensuring proper fitment for Lennox KBA, KCB, and KGA series rooftop units and furnaces. Replacing this furnace draft inducer gasket during motor changeouts is standard practice to prevent air bypass and ensure the centrifugal wheel maintains the correct static pressure for safe venting.
Key Benefits- OEM Compatibility: Precision-fit for Lennox 21W66 and LB-106197 induced draft assemblies, eliminating the need for field-modified generic gaskets.
- High-Temp Resilience: Constructed from specialized materials capable of enduring the thermal cycling common in induced draft motor operations.
- Gas Leak Prevention: Ensures a gastight seal at the inducer assembly, preventing carbon monoxide and combustion byproduct infiltration into the equipment room or living space.
- Pressure Stability: Helps maintain precise pressure switch differentials by sealing vacuum and positive pressure zones within the combustion blower housing.
Does this gasket work with older LB-106197 part numbers?
Yes, the 21W66 is the direct superseding part number for Lennox LB-106197. It is designed to the same tolerances for seamless integration.
Can I use RTV silicone instead of this induced draft assembly gasket?
Using RTV is not recommended as a primary seal for Lennox inducer motors. This specialized gasket provides the specific thickness and compression required for proper impeller clearance and pressure switch calibration.
Which Lennox models is this gasket compatible with?
This part is commonly found in Lennox K-Series (KGA, KBA, KCB) rooftop units and various 80% and 90%+ AFUE furnaces. Always verify the Lennox 21W66 part number against your specific unit’s parts list.
This item is not eligible for free shipping.
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.
Original: $27.99
-65%$27.99
$9.80Lennox 21W66 Gasket
The Lennox 21W66 Gasket is a critical OEM replacement component engineered specifically for induced draft assembly sealing in high-efficiency residential and commercial heating units. As a veteran tech knows, a compromised seal at the inducer motor lead to pressure switch trips and flue gas leakage. This draft inducer blower gasket (cross-referenced as LB-106197) is designed to withstand high-temperature combustion environments while maintaining a positive seal between the combustion blower housing and the furnace chassis. Precision-cut to Lennox 21W66 specifications, it features an approx. 4-1/2" diameter opening and overall dimensions of 7-13/16" x 8-1/2" x 1/2", ensuring proper fitment for Lennox KBA, KCB, and KGA series rooftop units and furnaces. Replacing this furnace draft inducer gasket during motor changeouts is standard practice to prevent air bypass and ensure the centrifugal wheel maintains the correct static pressure for safe venting.
Key Benefits- OEM Compatibility: Precision-fit for Lennox 21W66 and LB-106197 induced draft assemblies, eliminating the need for field-modified generic gaskets.
- High-Temp Resilience: Constructed from specialized materials capable of enduring the thermal cycling common in induced draft motor operations.
- Gas Leak Prevention: Ensures a gastight seal at the inducer assembly, preventing carbon monoxide and combustion byproduct infiltration into the equipment room or living space.
- Pressure Stability: Helps maintain precise pressure switch differentials by sealing vacuum and positive pressure zones within the combustion blower housing.
Does this gasket work with older LB-106197 part numbers?
Yes, the 21W66 is the direct superseding part number for Lennox LB-106197. It is designed to the same tolerances for seamless integration.
Can I use RTV silicone instead of this induced draft assembly gasket?
Using RTV is not recommended as a primary seal for Lennox inducer motors. This specialized gasket provides the specific thickness and compression required for proper impeller clearance and pressure switch calibration.
Which Lennox models is this gasket compatible with?
This part is commonly found in Lennox K-Series (KGA, KBA, KCB) rooftop units and various 80% and 90%+ AFUE furnaces. Always verify the Lennox 21W66 part number against your specific unit’s parts list.
This item is not eligible for free shipping.
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.
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Description
The Lennox 21W66 Gasket is a critical OEM replacement component engineered specifically for induced draft assembly sealing in high-efficiency residential and commercial heating units. As a veteran tech knows, a compromised seal at the inducer motor lead to pressure switch trips and flue gas leakage. This draft inducer blower gasket (cross-referenced as LB-106197) is designed to withstand high-temperature combustion environments while maintaining a positive seal between the combustion blower housing and the furnace chassis. Precision-cut to Lennox 21W66 specifications, it features an approx. 4-1/2" diameter opening and overall dimensions of 7-13/16" x 8-1/2" x 1/2", ensuring proper fitment for Lennox KBA, KCB, and KGA series rooftop units and furnaces. Replacing this furnace draft inducer gasket during motor changeouts is standard practice to prevent air bypass and ensure the centrifugal wheel maintains the correct static pressure for safe venting.
Key Benefits- OEM Compatibility: Precision-fit for Lennox 21W66 and LB-106197 induced draft assemblies, eliminating the need for field-modified generic gaskets.
- High-Temp Resilience: Constructed from specialized materials capable of enduring the thermal cycling common in induced draft motor operations.
- Gas Leak Prevention: Ensures a gastight seal at the inducer assembly, preventing carbon monoxide and combustion byproduct infiltration into the equipment room or living space.
- Pressure Stability: Helps maintain precise pressure switch differentials by sealing vacuum and positive pressure zones within the combustion blower housing.
Does this gasket work with older LB-106197 part numbers?
Yes, the 21W66 is the direct superseding part number for Lennox LB-106197. It is designed to the same tolerances for seamless integration.
Can I use RTV silicone instead of this induced draft assembly gasket?
Using RTV is not recommended as a primary seal for Lennox inducer motors. This specialized gasket provides the specific thickness and compression required for proper impeller clearance and pressure switch calibration.
Which Lennox models is this gasket compatible with?
This part is commonly found in Lennox K-Series (KGA, KBA, KCB) rooftop units and various 80% and 90%+ AFUE furnaces. Always verify the Lennox 21W66 part number against your specific unit’s parts list.
This item is not eligible for free shipping.
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.
