Plug and O-ring De Dietrich 7631021

Ensure a secure seal in your heating system with this plug and O-ring set. Designed for use in boiler and burner assemblies, this component helps prevent leaks and maintains system pressure. Whether you are performing routine maintenance or a repair, this plug and O-ring combination is a reliable choice for sealing unused ports or connections. It is a common spare part for various heating equipment, ensuring your system operates efficiently without unwanted fluid loss.