Custom Ceramic Tube Insulators

HERUN manufactures ceramic tube insulators and alumina insulating tubes for wires, heating elements, sensors, furnace equipment and electrical assemblies. Custom outside diameter, inside diameter, length, holes and end treatment are available.

Custom alumina ceramic tube insulators

Ceramic Insulating Tubes for Heat and Voltage

Ceramic tube insulators are used when plastic insulation fails from heat, wear, chemicals or electrical stress.

Wire and rod insulation

Alumina tubes isolate wires, rods and metal components in compact electrical assemblies.

Heating element supports

High-temperature ceramic tubes support heating wires, resistance elements and furnace equipment.

Sensor and thermocouple protection

Ceramic tubes protect sensors from heat, abrasion and process environments.

Multi-bore tube insulators

Two-hole, four-hole and custom multi-hole tubes for routing conductors or separating electrical paths.

Spacer and sleeve insulation

Tube-shaped insulators used as spacers, bushings, sleeves and standoff components.

Drawing-based OEM parts

Custom tube insulators made from drawings for equipment manufacturers and replacement projects.

Why Alumina Tube Insulators?

Alumina is a practical material for ceramic tube insulators because it combines electrical insulation, heat resistance, hardness and stable production cost.

  • Good electrical insulation for many industrial assemblies.
  • High-temperature stability compared with plastic insulation.
  • Wear-resistant surface for wires, rods and moving contact.
  • Available as single-bore, multi-bore and custom tube shapes.

Quote Details

  • Outer diameter, inner diameter, wall thickness and length.
  • Number of holes and hole spacing for multi-bore tubes.
  • Material grade, tolerance and surface finish.
  • Voltage, temperature, assembly method and quantity.

Ceramic Tube Insulator Questions

What are ceramic tube insulators used for?

They electrically isolate wires, rods, heating elements, sensors and metal components in high-temperature or high-voltage equipment.

Why is alumina used for tube insulators?

Alumina provides electrical insulation, heat resistance, hardness and chemical stability at a practical manufacturing cost.

Can tube insulators be made with custom holes?

Yes. HERUN can manufacture single-bore, multi-bore and perforated alumina tube insulators based on drawings and working conditions.

Need Custom Ceramic Tube Insulators?

Send the tube dimensions, hole layout, voltage, temperature and quantity. HERUN will review the insulation design and quote.

Request Tube Insulator Quote
WAWhatsApp Jim Yang