Rheem-Ruud SP15138 Ignitor Collar Gasket

The Rheem-Ruud SP15138 Ignitor Collar Gasket is a relatively tiny but quite significant part that is installed in the gas-fired furnaces or boilers manufactured by Rheem, Ruud, and/or other manufacturers that may be similar to the former two. It is a circular hard-wearing product that is manufactured from nitrile rubber which surrounds the base of the hot surface ignitor (HSI). Here is how it works: In the process of the operation of the furnace, the HSI is essentialin the ignition of the gas burner. However, the HSI works at high temperatures high temperatures. The ignitor collar gasket guarantees a correct fit between the HSI and the furnace body.