Reznor 120057 Gasket

The Reznor 120057 Gasket is a critical OEM sealing component designed specifically for secondary heat exchanger access and large inner cabinet seals. Measuring 102" x 1 1/2" x 1/8", this high-temperature door gasket is engineered to maintain the pressure boundary within the combustion chamber and air handling sections of high-capacity units. Using a Reznor 120057 replacement gasket ensures an airtight seal on the large inner access door, preventing bypass airflow and maintaining the precise static pressure required for optimal burner performance. This genuine part is constructed from a high-temperature resistant elastomer, providing the thermal stability needed for industrial heating cycles without degrading or losing its compression set. For technicians servicing Reznor OH, OB, and RAD235 series equipment, installing this factory-authorized gasket is essential for preventing heat loss and ensuring the unit meets original manufacturer efficiency and safety specifications.

• Verified Compatibility: Precision-cut for a direct fit on Reznor OH 95, 140, 190, and RAD235 models, eliminating field modifications.
• Thermal Integrity: Manufactured from industrial-grade elastomer to withstand consistent high-temperature exposure at the access door.
• Airtight Seal: Restores cabinet static pressure and prevents hazardous flue gas leakage into the conditioned airstream.
• Operational Efficiency: Eliminates unwanted air infiltration to help maintain the furnace’s intended energy rating and performance.

What are the dimensions of the Reznor 120057 Gasket?
This gasket is 102 inches in length, 1.5 inches wide, and 0.125 inches thick, providing full coverage for large-format inner access doors.

Which Reznor models use the 120057 door gasket?
It is primarily used in OH series (95, 140, 190), OB series, and RAD235 waste oil and heavy-duty heating units.

Why shouldn’t I use a generic foam tape instead of part 120057?
Generic adhesives often fail under high thermal stress. The OEM Reznor 120057 is rated for specific temperature ranges and maintains its seal under the mechanical pressure of the inner door fasteners.

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.