HERUN manufactures alumina ceramic insulators, spacers, tubes, washers, plates and special electrical insulation components for industrial equipment. We review voltage, temperature, mounting method and dimensions before quoting.
For many insulation parts, the key is not only material but also creepage distance, hole accuracy, surface finish and assembly fit.
Alumina tubes and sleeves for wires, heating elements, sensors, furnace equipment and high-temperature assemblies.
Insulating washers, bushings and spacers that separate conductive parts and resist heat or wear.
Flat alumina plates, substrates, mounting boards and supports for electrical and thermal equipment.
Perforated tubes and plates for heating systems, terminals, fixtures and special electrical routing.
Custom support parts, guides and holders for furnaces, welding fixtures and thermal process machinery.
Drawing-based alumina components for equipment manufacturers that need repeatable supply.
Alumina combines electrical insulation, hardness, heat resistance and chemical stability. It is widely used when plastic cannot handle heat and metal would conduct electricity.
If you only know the problem, send the temperature, voltage, size and a sample photo. We can help decide whether an alumina tube, washer, plate or custom insulator is the right starting point.