O-ring 69.44x3.53 De Dietrich 7618503

An O-ring 69.44x3.53 is a precision sealing component used in various boiler and burner applications to prevent fluid or gas leaks. With an inner diameter of 69.44 mm and cross-section of 3.53 mm, it fits specific grooves in pumps, valves, or pipe connections. This O-ring is essential for maintaining pressure and preventing leakage in heating equipment components. When replacing worn seals during boiler maintenance or repair, using the correct size ensures a tight seal and extends the life of the system. It is a common spare part for technicians working on gas burner parts and hydraulic assemblies.