O-ring 72X4 De Dietrich JJJ007216171

The O-Ring 72X4 is a durable sealing ring used in various boiler and burner applications. With a cross-section of 4 mm and an inner diameter of 72 mm, this O-ring creates a tight seal between mating surfaces, preventing leaks of water, gas, or air. It is commonly used in connections, valves, and pumps within heating systems. Replacing old or degraded O-rings is a simple yet effective way to maintain system efficiency and prevent costly damage. A must-have for any boiler maintenance kit.