
Lochinvar & A.O. Smith 100289450 O-Ring
The Lochinvar & A.O. Smith 100289450 O-Ring is a critical sealing component designed for high-performance gas valve assemblies and burner systems. As an OEM gas valve gasket replacement, this heavy-duty sealing ring is engineered from advanced synthetic rubber to provide a precision fit across various hydronic heating platforms. This specific part number, 100289450, serves as the direct replacement for 100288891, ensuring backward compatibility for legacy systems while meeting current factory specifications for chemical and thermal resistance. For contractors performing boiler maintenance and repair, using this genuine HVAC equipment seal is essential for preventing hazardous gas leaks and maintaining the vacuum integrity of the combustion chamber. Whether you are servicing a residential water heater or a commercial boiler, this Lochinvar O-ring 100289450 ensures a leak-proof interface between the gas control and the manifold, keeping high-efficiency systems running at peak performance without technical degradation.
Key Benefits:- Direct OEM Compatibility: Specifically engineered to replace part 100288891 without the need for additional modifications.
- Chemical Resistance: Manufactured from synthetic elastomers that resist degradation from fuel gases and lubricants used in gas valve assemblies.
- High-Temperature Durability: Designed to withstand the cyclic thermal stress common in Lochinvar and A.O. Smith heating systems.
- Precision Sealing: Tight tolerances provide an airtight seal, critical for maintaining proper combustion ratios and system safety.
Is the 100289450 compatible with older units that use part 100288891?
Yes, 100289450 is the official direct replacement for 100288891. It features the same dimensions and material specifications to ensure a seamless fit in older Lochinvar and A.O. Smith models.
What are the signs that my boiler o-ring needs to be replaced?
Technicians should inspect the gas valve gasket during annual service. Common triggers for replacement include visible cracking, flattening of the ring (compression set), or if the gas valve is being unseated for repair, as reusing old seals can lead to leaks.
Can this o-ring be used in both residential and commercial applications?
Yes, this versatile HVAC replacement part is utilized in various Lochinvar CCN and CDN series boilers, covering both small-scale residential units and larger commercial heating configurations.
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: $19.21
-65%$19.21
$6.72Lochinvar & A.O. Smith 100289450 O-Ring
The Lochinvar & A.O. Smith 100289450 O-Ring is a critical sealing component designed for high-performance gas valve assemblies and burner systems. As an OEM gas valve gasket replacement, this heavy-duty sealing ring is engineered from advanced synthetic rubber to provide a precision fit across various hydronic heating platforms. This specific part number, 100289450, serves as the direct replacement for 100288891, ensuring backward compatibility for legacy systems while meeting current factory specifications for chemical and thermal resistance. For contractors performing boiler maintenance and repair, using this genuine HVAC equipment seal is essential for preventing hazardous gas leaks and maintaining the vacuum integrity of the combustion chamber. Whether you are servicing a residential water heater or a commercial boiler, this Lochinvar O-ring 100289450 ensures a leak-proof interface between the gas control and the manifold, keeping high-efficiency systems running at peak performance without technical degradation.
Key Benefits:- Direct OEM Compatibility: Specifically engineered to replace part 100288891 without the need for additional modifications.
- Chemical Resistance: Manufactured from synthetic elastomers that resist degradation from fuel gases and lubricants used in gas valve assemblies.
- High-Temperature Durability: Designed to withstand the cyclic thermal stress common in Lochinvar and A.O. Smith heating systems.
- Precision Sealing: Tight tolerances provide an airtight seal, critical for maintaining proper combustion ratios and system safety.
Is the 100289450 compatible with older units that use part 100288891?
Yes, 100289450 is the official direct replacement for 100288891. It features the same dimensions and material specifications to ensure a seamless fit in older Lochinvar and A.O. Smith models.
What are the signs that my boiler o-ring needs to be replaced?
Technicians should inspect the gas valve gasket during annual service. Common triggers for replacement include visible cracking, flattening of the ring (compression set), or if the gas valve is being unseated for repair, as reusing old seals can lead to leaks.
Can this o-ring be used in both residential and commercial applications?
Yes, this versatile HVAC replacement part is utilized in various Lochinvar CCN and CDN series boilers, covering both small-scale residential units and larger commercial heating configurations.
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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Product Information
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Description
The Lochinvar & A.O. Smith 100289450 O-Ring is a critical sealing component designed for high-performance gas valve assemblies and burner systems. As an OEM gas valve gasket replacement, this heavy-duty sealing ring is engineered from advanced synthetic rubber to provide a precision fit across various hydronic heating platforms. This specific part number, 100289450, serves as the direct replacement for 100288891, ensuring backward compatibility for legacy systems while meeting current factory specifications for chemical and thermal resistance. For contractors performing boiler maintenance and repair, using this genuine HVAC equipment seal is essential for preventing hazardous gas leaks and maintaining the vacuum integrity of the combustion chamber. Whether you are servicing a residential water heater or a commercial boiler, this Lochinvar O-ring 100289450 ensures a leak-proof interface between the gas control and the manifold, keeping high-efficiency systems running at peak performance without technical degradation.
Key Benefits:- Direct OEM Compatibility: Specifically engineered to replace part 100288891 without the need for additional modifications.
- Chemical Resistance: Manufactured from synthetic elastomers that resist degradation from fuel gases and lubricants used in gas valve assemblies.
- High-Temperature Durability: Designed to withstand the cyclic thermal stress common in Lochinvar and A.O. Smith heating systems.
- Precision Sealing: Tight tolerances provide an airtight seal, critical for maintaining proper combustion ratios and system safety.
Is the 100289450 compatible with older units that use part 100288891?
Yes, 100289450 is the official direct replacement for 100288891. It features the same dimensions and material specifications to ensure a seamless fit in older Lochinvar and A.O. Smith models.
What are the signs that my boiler o-ring needs to be replaced?
Technicians should inspect the gas valve gasket during annual service. Common triggers for replacement include visible cracking, flattening of the ring (compression set), or if the gas valve is being unseated for repair, as reusing old seals can lead to leaks.
Can this o-ring be used in both residential and commercial applications?
Yes, this versatile HVAC replacement part is utilized in various Lochinvar CCN and CDN series boilers, covering both small-scale residential units and larger commercial heating configurations.
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.












