Zündkerze „3“ / „4“ und O-Ring von De Dietrich 7630999

This plug with a 3/4 inch thread includes an integrated O-ring for enhanced sealing. It is commonly used to close unused ports or openings in boiler and burner systems, preventing leaks and maintaining pressure. The O-ring ensures a tight fit, making it a reliable choice for maintenance and repair tasks where a secure seal is critical.