25 PSI sequencing: Designed for exact calibration in multi-valve configurations

protecting the heat exchanger and ensuring efficient combustion airflow

and the unit must be replaced

As the direct replacement for AP13145

but it is best practice to inspect the existing motor shaft for scoring or debris before securing the new hub

Lennox 17F15 Gasket 340155-7026 25 PSI sequencing: Designed forThe Lennox 17F15 Gasket Replacement Kit is an essential OEM component designed for high performance sealing in various Lennox furnace and HVAC applications. This kit features a 10x20 sheet of durable, white fiberglass material, engineered to withstand the thermal stresses and high heat environments common in modern heat exchanger assemblies. Whether you are performing a routine inspection or replacing a degraded furnace gasket, using genuine Lennox