
Reznor 115151 Gasket
The Reznor 115151 Gasket is a critical OEM replacement part engineered for high-temperature sealing in industrial and commercial heating systems. Designed specifically as an inner exhaust box cover gasket, this component ensures a gas-tight seal to prevent flue gas bypass and maintain optimal combustion efficiency. Measuring 1-1/2" x 1/8" x 11", the 115151 is a standard fit for many Reznor gas-fired unit heaters, providing the necessary thermal resistance for the inner exhaust box assembly. For technicians performing heat exchanger maintenance or venting repairs, replacing worn or brittle gaskets is a non-negotiable step to prevent carbon monoxide leakage and pressure switch trip-outs. Utilizing genuine Reznor furnace parts like the 115151 guarantees precise dimensional compatibility and material integrity compared to generic alternatives. Ensure all mating surfaces are cleaned of old adhesive and debris before applying this sealing gasket to secure the collector box and exhaust path effectively.
Key Benefits- Precision Sealing: Nominal dimensions of 1-1/2" x 1/8" x 11" provide an exact fit for inner exhaust box covers.
- Gas-Tight Integrity: Specifically designed to withstand the thermal expansion and pressure of Reznor heating units.
- Critical Safety: Prevents combustion byproduct leakage into the heat exchanger cabinet or occupied space.
- Direct OEM Fit: Eliminates the need for field-cutting or site-modified substitutes, ensuring HVAC system reliability.
Is the 115151 gasket required every time the exhaust box is opened?
Yes. Standard service protocols for unit heaters dictate that high-temperature gaskets should be replaced whenever the inner exhaust box cover is removed, as compression set and thermal cycling often compromise the reuse of old seals.
What causes this gasket to fail prematurely?
Excessive flue temperatures, often caused by improper gas manifold pressure or restricted airflow, can lead to hardening and cracking of the Reznor 115151 material, resulting in venting leaks.
Can I use RTV silicone instead of this specific Reznor part?
Using RTV as a total substitute is not recommended for inner exhaust box applications where specific thickness and compression are required to bridge the gap between the header panel and the cover plate correctly.
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: $17.46
-65%$17.46
$6.11Reznor 115151 Gasket
The Reznor 115151 Gasket is a critical OEM replacement part engineered for high-temperature sealing in industrial and commercial heating systems. Designed specifically as an inner exhaust box cover gasket, this component ensures a gas-tight seal to prevent flue gas bypass and maintain optimal combustion efficiency. Measuring 1-1/2" x 1/8" x 11", the 115151 is a standard fit for many Reznor gas-fired unit heaters, providing the necessary thermal resistance for the inner exhaust box assembly. For technicians performing heat exchanger maintenance or venting repairs, replacing worn or brittle gaskets is a non-negotiable step to prevent carbon monoxide leakage and pressure switch trip-outs. Utilizing genuine Reznor furnace parts like the 115151 guarantees precise dimensional compatibility and material integrity compared to generic alternatives. Ensure all mating surfaces are cleaned of old adhesive and debris before applying this sealing gasket to secure the collector box and exhaust path effectively.
Key Benefits- Precision Sealing: Nominal dimensions of 1-1/2" x 1/8" x 11" provide an exact fit for inner exhaust box covers.
- Gas-Tight Integrity: Specifically designed to withstand the thermal expansion and pressure of Reznor heating units.
- Critical Safety: Prevents combustion byproduct leakage into the heat exchanger cabinet or occupied space.
- Direct OEM Fit: Eliminates the need for field-cutting or site-modified substitutes, ensuring HVAC system reliability.
Is the 115151 gasket required every time the exhaust box is opened?
Yes. Standard service protocols for unit heaters dictate that high-temperature gaskets should be replaced whenever the inner exhaust box cover is removed, as compression set and thermal cycling often compromise the reuse of old seals.
What causes this gasket to fail prematurely?
Excessive flue temperatures, often caused by improper gas manifold pressure or restricted airflow, can lead to hardening and cracking of the Reznor 115151 material, resulting in venting leaks.
Can I use RTV silicone instead of this specific Reznor part?
Using RTV as a total substitute is not recommended for inner exhaust box applications where specific thickness and compression are required to bridge the gap between the header panel and the cover plate correctly.
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 Reznor 115151 Gasket is a critical OEM replacement part engineered for high-temperature sealing in industrial and commercial heating systems. Designed specifically as an inner exhaust box cover gasket, this component ensures a gas-tight seal to prevent flue gas bypass and maintain optimal combustion efficiency. Measuring 1-1/2" x 1/8" x 11", the 115151 is a standard fit for many Reznor gas-fired unit heaters, providing the necessary thermal resistance for the inner exhaust box assembly. For technicians performing heat exchanger maintenance or venting repairs, replacing worn or brittle gaskets is a non-negotiable step to prevent carbon monoxide leakage and pressure switch trip-outs. Utilizing genuine Reznor furnace parts like the 115151 guarantees precise dimensional compatibility and material integrity compared to generic alternatives. Ensure all mating surfaces are cleaned of old adhesive and debris before applying this sealing gasket to secure the collector box and exhaust path effectively.
Key Benefits- Precision Sealing: Nominal dimensions of 1-1/2" x 1/8" x 11" provide an exact fit for inner exhaust box covers.
- Gas-Tight Integrity: Specifically designed to withstand the thermal expansion and pressure of Reznor heating units.
- Critical Safety: Prevents combustion byproduct leakage into the heat exchanger cabinet or occupied space.
- Direct OEM Fit: Eliminates the need for field-cutting or site-modified substitutes, ensuring HVAC system reliability.
Is the 115151 gasket required every time the exhaust box is opened?
Yes. Standard service protocols for unit heaters dictate that high-temperature gaskets should be replaced whenever the inner exhaust box cover is removed, as compression set and thermal cycling often compromise the reuse of old seals.
What causes this gasket to fail prematurely?
Excessive flue temperatures, often caused by improper gas manifold pressure or restricted airflow, can lead to hardening and cracking of the Reznor 115151 material, resulting in venting leaks.
Can I use RTV silicone instead of this specific Reznor part?
Using RTV as a total substitute is not recommended for inner exhaust box applications where specific thickness and compression are required to bridge the gap between the header panel and the cover plate correctly.
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.












