Hülle (10 ps) De Dietrich 300011292

The sleeve is a protective or guiding component used in burner assemblies to align or insulate parts such as electrodes or tubes. It helps maintain proper spacing and reduces wear from vibration or heat. As a general spare part for heating equipment, this sleeve is useful in various burner configurations. When servicing boiler spare parts, replacing a worn sleeve can improve component longevity and system reliability.