Reznor 103420 Burner Gasket

The Reznor 103420 Burner Gasket is a precision-engineered OEM replacement part designed to provide an airtight seal between the burner assembly and the heater cabinet panel. This high-temperature gasket is critical for maintaining correct internal pressure and preventing combustion bypass in specialized heating equipment. Known as a burner air tube gasket or Beckett #31802, it is field-proven for reliability in demanding commercial and industrial environments. This replacement piece is built for technicians who prioritize factory-standard performance and safety when performing routine maintenance or complete system overhauls.

Engineered for high-temp resistance, the Reznor 103420 is compatible with a wide range of waste oil heaters and furnaces, including the Reznor RA Series and RAD Series (sizes 110, 140, 150, 235, 250, 350, and 500). It also services RV Series models such as the RV225 and RV325. Proper installation of this heating system component ensures that your Beckett burner housing remains securely sealed, improving fuel efficiency and preventing common ignition issues caused by air leaks. When swapping a burner assembly or heat exchanger, replacing this gasket is a standard professional practice to ensure the unit stays in code and operates at peak thermal efficiency.

• Precise OEM Fit: Ensures an exact seal for Reznor RA, RAD, and RV series waste oil furnaces without the need for field modifications.
• Extreme Temperature Resistance: Manufactured from industrial-grade materials to withstand the intense heat of burner assembly interfaces.
• Cross-Compatibility: Direct replacement for Beckett 31802, providing flexibility for contractors servicing multiple burner configurations.
• Optimized Combustion: Eliminates air infiltration at the burner-to-cabinet junction, preventing soot buildup and flame instability.

• What models use the Reznor 103420 gasket? It is primarily used in Reznor RA, RAD, and RV waste oil unit heaters, fitting sizes from 110 up to 500.
• Do I need to replace the gasket during a annual burner tune-up? While not always required, veteran technicians recommend replacing any burner gasket that shows signs of hardening, cracking, or compression set to prevent service callbacks.
• Is this compatible with Beckett burners? Yes, this specific part is the OEM equivalent for Beckett #31802 used on Reznor-adapted burner housings.

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.