De Dietrich 97956128-Dichtung D170/90.3X5

This is a gasket intended for use in boiler and burner systems. Gaskets of this type serve as seals between flanges, pipe connections, and component interfaces, preventing leaks of water, gas, or flue gases. They are routine consumables that are replaced during service visits to maintain system integrity and protect downstream components from contamination or pressure loss. When selecting a replacement gasket, the key parameters are the exact dimensions and the material specification. The material must be compatible with the medium (water, gas, condensate) and the operating temperature range at the sealing point. Common materials for such applications include EPDM, silicone, graphite, or fibre-based composites. A gasket that does not match the original in thickness, outer diameter, or inner diameter may not seal properly and can cause leakage or system malfunction. Before installation, inspect the mating surfaces for damage, corrosion, or debris. Ensure that the new gasket is of the correct type for the assembly – some gaskets are part of a repair kit specific to a valve or regulator series and are not interchangeable with other parts. Always verify the part number and dimensions against the original component.