If the new unit is smaller

Depending on the tubing material and nut type used

Durable Brass Construction: Resists corrosion and thermal expansion during high-cycle furnace operation

Built for industrial durability

Is this part required for all actuator installations

Lochinvar & A.O. Smith 100233587 Burner Gasket If the new unit isWhen you are performing annual maintenance on a high efficiency Lochinvar Knight or A. O. Smith system, ensuring a gastight seal at the burner assembly is non negotiable. The Lochinvar & A. O. Smith 100233587 Combustion Burner Gasket is the professional grade OEM solution designed to prevent the escape of hazardous combustion byproducts and maintain the precise pressure balance required for condensing boiler efficiency. This specific boiler burner