De Dietrich 97550197 gasket 24x18x1.5

De Dietrich 97550197 is a gasket with dimensions 24 x 18 x 1.5 mm, listed under boiler filters, gaskets and seals. The manufacturer codes are 97550197 and 336.622.006. Gaskets of this type create a leak‑tight seal between two flanged or flat surfaces in a boiler or burner assembly – for example, between a pump head and its housing, a gas valve body and a manifold, or a heat exchanger cover and the casting. They prevent the escape of water, gas or flue gases and protect the precision components downstream from dirt or pressure loss. When selecting a replacement gasket of these dimensions, the material choice is critical. Gaskets for heating systems are made from EPDM, silicone, graphite or fibre depending on the medium (water, gas, oil) and the operating temperature. A gasket for a water circuit will not withstand flue gas temperatures, and a gas‑rated gasket must be impermeable to hydrocarbons. The exact inner and outer diameter (here 24 mm and 18 mm) and thickness (1.5 mm) must match the original to avoid leakage or incorrect compression. On installation, ensure both sealing surfaces are clean and free of debris, and tighten the fasteners evenly to the torque specified by the appliance manufacturer. Overtightening can distort the gasket or the flange; undertightening leaves a gap. For a service visit, carrying a selection of common gasket sizes – including 24x18x1.5 – saves time when the original is damaged or missing. Always verify that the part number (97550197 or 336.622.006) corresponds to the application, as gaskets of identical dimensions may differ in material grade.