always use the OEM-specified temperature rating to maintain the safety integrity of the furnace and prevent heat exchanger fatigue

Direct Compatibility: Engineered as a drop-in replacement for the S8402-114

Wide Compatibility: Standard 1/8" NPT connection integrates seamlessly with RV and R series Maxitrol regulators

providing a direct fit that allows technicians to restore HVAC safety circuit integrity without field modifications

Reznor 170039 Gasket always use the OEM-specified temperatureThe Reznor 170039 Gasket is a critical top bottom flue wrapper gasket engineered specifically for high efficiency unit heaters. Designed to maintain a gas tight seal between the heat exchanger and the flue collector box, this OEM Reznor replacement part prevents combustion byproduct leakage, ensuring the unit maintains its rated AFUE performance. This high temperature insulating material is built to withstand extreme thermal cycling without