O-ring 19,8x3,6 De Dietrich 7769780

The O-ring 19,8x3,6 is a precision sealing ring used in many boiler and burner components to prevent gas or water leaks. With an inner diameter of 19.8 mm and a cross-section of 3.6 mm, this O-ring fits specific grooves in gas valves, pumps, or pipe connections. Made from durable elastomer, it resists compression set and chemical attack from heating system fluids. Replacing worn O-rings is a simple yet effective way to restore sealing integrity and prevent costly leaks. Always ensure the O-ring material is compatible with the medium it will seal, such as water or gas.