
Laars Heating Systems RS2104900 Gasket
The Laars Heating Systems RS2104900 Gasket is a critical OEM component designed to provide a high-integrity seal between the gas valve and the venturi assembly. As a veteran technician, you know that maintaining the correct air-to-fuel ratio is non-negotiable for combustion stability. This gas valve venturi gasket is precision-cut from high-grade cork to ensure it conforms perfectly to the mating surfaces of Laars boilers and high-efficiency commercial water heaters, effectively preventing hazardous gas bypass or air infiltration.
Engineered for professional-grade reliability, this Laars replacement part is essential for the NTH series modulating boilers (models 285 through 850) and NTV volume water heaters. When performing a teardown or routine maintenance on the gas train, replacing the RS2104900 cork gasket is standard protocol to avoid nuisance lockouts and ensure the venturi pulls the precise vacuum required for optimal burner performance. Using this genuine Laars gasket eliminates the compatibility risks and premature degradation often associated with generic aftermarket seals.
Key Benefits for Contractors:- Precision Sealing: High-density cork material provides superior compression recovery, maintaining a leak-free gas valve connection under varied thermal cycles.
- OEM Compatibility: Specifically engineered for Laars NTH 500-850 and NTV series equipment, ensuring a drop-in fit without field modifications.
- Combustion Integrity: Prevents air leaks at the venturi inlet, which is vital for maintaining the stable air-fuel mixture required by modulating gas systems.
- System Longevity: Helps prevent irregular burner firing and component soot buildup by securing the integrity of the gas delivery path.
When should the RS2104900 gasket be replaced?
Standard service best practice dictates replacing the gasket every time the gas valve is separated from the venturi. Because cork is a compression-based material, it takes a "set" once torqued; reusing an old gasket can lead to micro-leaks that disrupt the air-fuel ratio.
Does this gasket require additional sealants or RTV?
No. The RS2104900 is designed to seal dry. Applying silicone or liquid sealants can potentially migrate into the gas valve orifice or venturi throat, leading to catastrophic equipment failure or improper combustion.
Is this gasket compatible with older Laars Mighty Therm models?
While often used in Laars Heating Systems, always verify your specific model number. This part is primarily optimized for the modulating venturi assemblies found in the NTH and NTV high-efficiency lines.
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: $57.84
-65%$57.84
$20.24Laars Heating Systems RS2104900 Gasket
The Laars Heating Systems RS2104900 Gasket is a critical OEM component designed to provide a high-integrity seal between the gas valve and the venturi assembly. As a veteran technician, you know that maintaining the correct air-to-fuel ratio is non-negotiable for combustion stability. This gas valve venturi gasket is precision-cut from high-grade cork to ensure it conforms perfectly to the mating surfaces of Laars boilers and high-efficiency commercial water heaters, effectively preventing hazardous gas bypass or air infiltration.
Engineered for professional-grade reliability, this Laars replacement part is essential for the NTH series modulating boilers (models 285 through 850) and NTV volume water heaters. When performing a teardown or routine maintenance on the gas train, replacing the RS2104900 cork gasket is standard protocol to avoid nuisance lockouts and ensure the venturi pulls the precise vacuum required for optimal burner performance. Using this genuine Laars gasket eliminates the compatibility risks and premature degradation often associated with generic aftermarket seals.
Key Benefits for Contractors:- Precision Sealing: High-density cork material provides superior compression recovery, maintaining a leak-free gas valve connection under varied thermal cycles.
- OEM Compatibility: Specifically engineered for Laars NTH 500-850 and NTV series equipment, ensuring a drop-in fit without field modifications.
- Combustion Integrity: Prevents air leaks at the venturi inlet, which is vital for maintaining the stable air-fuel mixture required by modulating gas systems.
- System Longevity: Helps prevent irregular burner firing and component soot buildup by securing the integrity of the gas delivery path.
When should the RS2104900 gasket be replaced?
Standard service best practice dictates replacing the gasket every time the gas valve is separated from the venturi. Because cork is a compression-based material, it takes a "set" once torqued; reusing an old gasket can lead to micro-leaks that disrupt the air-fuel ratio.
Does this gasket require additional sealants or RTV?
No. The RS2104900 is designed to seal dry. Applying silicone or liquid sealants can potentially migrate into the gas valve orifice or venturi throat, leading to catastrophic equipment failure or improper combustion.
Is this gasket compatible with older Laars Mighty Therm models?
While often used in Laars Heating Systems, always verify your specific model number. This part is primarily optimized for the modulating venturi assemblies found in the NTH and NTV high-efficiency lines.
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 Laars Heating Systems RS2104900 Gasket is a critical OEM component designed to provide a high-integrity seal between the gas valve and the venturi assembly. As a veteran technician, you know that maintaining the correct air-to-fuel ratio is non-negotiable for combustion stability. This gas valve venturi gasket is precision-cut from high-grade cork to ensure it conforms perfectly to the mating surfaces of Laars boilers and high-efficiency commercial water heaters, effectively preventing hazardous gas bypass or air infiltration.
Engineered for professional-grade reliability, this Laars replacement part is essential for the NTH series modulating boilers (models 285 through 850) and NTV volume water heaters. When performing a teardown or routine maintenance on the gas train, replacing the RS2104900 cork gasket is standard protocol to avoid nuisance lockouts and ensure the venturi pulls the precise vacuum required for optimal burner performance. Using this genuine Laars gasket eliminates the compatibility risks and premature degradation often associated with generic aftermarket seals.
Key Benefits for Contractors:- Precision Sealing: High-density cork material provides superior compression recovery, maintaining a leak-free gas valve connection under varied thermal cycles.
- OEM Compatibility: Specifically engineered for Laars NTH 500-850 and NTV series equipment, ensuring a drop-in fit without field modifications.
- Combustion Integrity: Prevents air leaks at the venturi inlet, which is vital for maintaining the stable air-fuel mixture required by modulating gas systems.
- System Longevity: Helps prevent irregular burner firing and component soot buildup by securing the integrity of the gas delivery path.
When should the RS2104900 gasket be replaced?
Standard service best practice dictates replacing the gasket every time the gas valve is separated from the venturi. Because cork is a compression-based material, it takes a "set" once torqued; reusing an old gasket can lead to micro-leaks that disrupt the air-fuel ratio.
Does this gasket require additional sealants or RTV?
No. The RS2104900 is designed to seal dry. Applying silicone or liquid sealants can potentially migrate into the gas valve orifice or venturi throat, leading to catastrophic equipment failure or improper combustion.
Is this gasket compatible with older Laars Mighty Therm models?
While often used in Laars Heating Systems, always verify your specific model number. This part is primarily optimized for the modulating venturi assemblies found in the NTH and NTV high-efficiency lines.
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.












