Laars Heating Systems RS2104900 Gasket 340793-762 this is the correct technical

this is the correct technical specification for your unit

When replacing a centrifugal blower wheel

Because it is a precision-machined flange

It is critical to match the 270-324 MFD range specified by the manufacturer

ensuring a precise match for the burner assembly and gas valve regulator settings

Laars Heating Systems RS2104900 Gasket 340793-762 this is the correct technicalThe Laars Heating Systems RS2104900 Gasket is a critical OEM component designed to provide a high integrity seal between the gas valve and the venturi assembly. As a veteran technician, you know that maintaining the correct air to fuel ratio is non negotiable for combustion stability. This gas valve venturi gasket is precision cut from high grade cork to ensure it conforms perfectly to the mating surfaces of Laars boilers and high efficiency