Elmatic’s 9.5 mm square-section tubular electric heaters are precision-engineered to meet the increasing performance demands of modern machinery and industrial processes.
These heaters are designed to fill the need for a robust, fully sealed heating element capable of operating at higher temperatures while delivering superior heat transfer and durability.
Our square-section design combines high mechanical strength with outstanding flexibility, making it suitable for a wide range of applications across multiple industries.
Square Section Tubular Heaters Applications
Our 9.5 mm square section tubular heaters are used extensively across industries and are ideal for:
- Mould and Tool Heating
- Die Heating
- Manifolds
- Plastic Processing Machinery
- Packaging and Converting Equipment
- General Industrial Heating Applications
This construction offers significant advantages over conventional round tubular elements and traditional mica or ceramic heaters. With increased surface contact, these heaters deliver enhanced heat transfer, higher watt density, and improved operational efficiency.

Advantages of the Square Section Tubular Heaters
The square 9.5 mm tubular construction offers several key benefits:
- Improved heat transfer due to greater surface contact area
- High watt density, supporting increased power output
- Operating temperatures up to 750°C
- Exceptional strength and longevity under demanding conditions
- Fully sealed design to protect against moisture ingress or incidental spillage
- Flexible configuration options, including single-ended or double-ended terminations
These features make our square-section heaters ideal for high-temperature, high-performance environments where consistency and reliability are critical.
Special Features of Square Section Tubular Heaters
- High Watt Density – Capable of operating at temperatures up to 750°C
- Square Section – Increased surface contact for improved heat transfer
- Optional Thermocouple Integration
- Single-Ended Terminations – Simplified wiring and installation
- Double-Ended Terminations – Accommodates a wider range of design requirements
- Protective Outer Options – Stainless steel braid, flexible metal conduit, or threaded terminals
- Fully Sealed Construction – Protection against moisture or avoidable spills
Square Section Tubular Heaters Technical Specifications
Sheath Material
- Incoloy 800
- Stainless Steel 316
Insulation Material
- High-purity Magnesium Oxide (MgO) powder for superior dielectric strength and thermal conductivity
Resistance Windings
- Nickel-Chrome 80/20 resistance wire
Standard Wall Thickness
- 0.7 mm (larger available on request)
Termination Options
- Threaded terminals with terminal box
- Ceramic blocks and ceramic blocks with terminal boxes
- Low-profile terminal box with leads
- Armour-braided leads
- Flexible metallic conduit
- Double-insulated glass-fibre leads
- 2-pin or 3-pin European plugs and sockets
Electrical Specifications
- Voltage Supply: Any voltage up to 480V
- Maximum Watt Density: 35 W/in²
- Maximum Operating Temperature: Up to 750°C
- Resistance Tolerance: ±7.5%
- Minimum Bend Radius: 15 mm
Ordering Information
Every square-section tubular heater manufactured by Elmatic is built to customer specification. To ensure accurate quotations and production, please provide the following details:
- Heater Section: 9.5 mm
- Dimensions: Internal diameter of coil, grid size, or complete shape specification
- Wattage Requirement
- Voltage Requirement
- Lead Length & Termination Type
- Dimensional Sketch or Sample
- Required Quantity
At Elmatic, we are dedicated to providing bespoke heating solutions that deliver superior performance, reliability, and durability, tailored to meet the unique needs of each of our clients.
For more information regarding our square section tubular heaters or to discuss your specific requirements, please call us on (029) 2077 8727, or visit our contact us page where one of our friendly team members will be happy to assist you.
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Elmatic – Your trusted partner in industrial and electric heating solutions
Delivery & Enquiries
Most items are available for delivery in 4/5 or 2/3 working days. However, we do offer additional emergency services for customers who are in a breakdown situation. This includes a 48hr services on Mica products, Cartridge Heaters and Ceramic Knuckle Heaters. For all enquires please contact a member of our sales team who will be happy to assist.
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