If you're in the plastic, molding, or semiconductor industries, or if you're managing a manufacturing process that requires reliable, efficient, and customizable heating solutions, you've come to the right place. Our 12V DC Cartridge Heaters offer a versatile, durable solution to your heating needs. Whether you're a small-to-medium enterprise (SME) or a large manufacturing corporation, we understand the challenges you face - from ensuring product quality in high-demand environments, to meeting tight delivery deadlines, to dealing with cost pressures. Our heaters are designed to address all of these concerns with quality, flexibility, and reliability.
Products Specification
|
Product Name |
Mini Cartridge Heater |
|
Diameter |
3mm to 25mm |
|
Heating Element Material |
Nickel-Chromium 8020 Alloy |
|
Voltage Options |
12V, 24V, 120V, 230V, 380V |
|
Insulation Resistance |
≥50 MΩ |
|
Leakage Current |
≤0.5mA |
|
Length Tolerance |
±0.5mm |
|
Power Tolerance |
+5%, -10% |
|
Wire Insulation |
Silicone rubber, fiberglass, or nickel wire |
|
Material |
Stainless steel sheath for durability |
|
Fill Material |
Magnesium oxide (MgO) for better heat transfer |
|
Color |
White |

Types and Design of 12V DC Cartridge Heaters
Our 12V DC Cartridge Heaters come in various designs to suit different industrial needs. From the images provided, you can see a wide range of shapes and configurations that are available to meet specific heating requirements.
- Straight and L-Shaped Cartridge Heaters
Some cartridge heaters come in straight designs, ideal for applications where a uniform, direct heat source is needed along a single axis.
L-shaped heaters are great for installations where the heater needs to fit into confined spaces or around obstacles. This flexibility in design allows for precise placement in complex machinery and manufacturing setups.
- Custom Lengths and Diameters
These heaters can be manufactured in custom lengths (3mm to 25mm in diameter), which means we can tailor the heater size to fit the specific dimensions of your equipment. This ensures maximum heating efficiency and compatibility with your setup.
- Sheath Materials
The stainless steel sheath is commonly used for its durability and corrosion resistance, ensuring that the heater maintains its integrity even in demanding environments. Further enhancing their long-term reliability.
- Lead Wire and Thermocouple Options
Lead wires come in different configurations (silicone rubber, fiberglass, nickel) depending on the environmental conditions they need to withstand. Some models feature thermocouple junctions for precise temperature control, allowing you to monitor and adjust the heat output efficiently.
- Compacted Magnesium Oxide (MgO) Insulation
The MgO insulation is essential for maximizing heat transfer and ensuring the heater is both efficient and long-lasting. This insulation helps prevent heat loss and contributes to the overall thermal efficiency of the product.
- Different Connector Types
Some cartridge heaters come with various connector types for easy installation and maintenance. These connectors ensure that the heater can be securely connected to your system, minimizing the chances of damage or performance issues over time.

Why Choose Our Cartridge Heaters?
- Customization for Your Needs
Whether you need a specific shape, size, or wattage, our cartridge heaters are easily customizable to fit your unique application requirements. We offer both OEM and ODM services to ensure that you get exactly what you need for your production processes.
- Efficient Heating
With a high-quality magnesium oxide (MgO) filling, these heaters are designed to maximize heat transfer and durability, ensuring long-lasting performance. This makes them ideal for industries where precision and reliability are critical, like semiconductor manufacturing and plastic injection molding.
- Durability and Reliability
Our heaters are built to withstand harsh environments, whether it's for high temperatures or frequent on-and-off cycles. The stainless steel sheath adds an extra layer of protection against corrosion and damage, making these heaters perfect for long-term use in demanding environments.
- High Performance in a Variety of Applications
From building heating to infrared radiation heating, our cartridge heaters excel in a wide range of applications. They are also used in salt or acid heating systems, desalination units, and even specialized heating in the medical industry. No matter your industry, we have the right heating solution for you.

Applications of 12V DC Cartridge Heaters
Our 12V DC Cartridge Heaters are widely used across multiple industries, offering unparalleled performance and versatility in diverse applications. Here are some key areas where these heaters are commonly applied:
- Plastic Packaging: In the packaging industry, cartridge heaters are used to heat molds and other components, ensuring that plastic materials are consistently molded to precise specifications. Their ability to maintain a stable temperature is crucial for producing high-quality, durable plastic products.
- Injection Molding:Cartridge heaters are widely used in injection molding machines to heat nozzles, barrels, and molds. Their precise and uniform heating helps improve the quality and speed of the molding process, making them essential for high-volume production lines.
- Small Mold Heating: These heaters are also used for small mold heating applications where exact temperature control is crucial for creating complex, delicate mold shapes. The compact size of the heater makes it ideal for heating small spaces with minimal thermal loss.
- Hot Pressing: In the hot pressing process, cartridge heaters are used to maintain high temperatures to press materials such as plastics, rubbers, and composites. Their reliability and heat retention make them indispensable for manufacturing products that require consistent heat for optimal molding.
- Semiconductor Industry: The semiconductor industry relies heavily on cartridge heaters for the precise heating of equipment used in processes like soldering, etching, and curing. The high thermal efficiency of our heaters ensures that the delicate components in this industry are not damaged during heat treatment.

Why SUWAIE is Your Partner for Cartridge Heaters
At SUWAIE, we don't just sell heating elements; we offer a partnership. Since 2007, we have been committed to delivering high-quality, reliable heating solutions across various industries, including electrical engineering, automotive, electronics, and more. With over 300 employees, including more than 50 senior engineers, we have the expertise and the resources to fulfill your requirements.
Our Advantages
- Experience and Expertise: Over 10 years of experience in providing customized heating solutions for various industries.
- Quality Assurance: We conduct 100% quality checks on all products, ensuring you receive only the best.
- Competitive Pricing: As a manufacturer with in-house mold design and assembly, we can offer competitive pricing without compromising quality.
- Custom Packaging: OEM services for packaging are available, and we can tailor packaging with your company's logo and design.

If you're looking for a reliable supplier of high-quality 12V DC cartridge heaters, look no further than SUWAIE. Whether you're a procurement manager, a technical engineer, or a supply chain expert, our team is here to help you solve your heating challenges with expert advice, fast delivery, and excellent customer service.
packing

FAQ
What are the benefits of using magnesium oxide (MgO) in cartridge heaters?
Magnesium oxide (MgO) is an excellent insulator and heat conductor, which allows for efficient heat transfer and greater durability. It helps our heaters achieve faster heating times and longer life cycles, making them ideal for high-demand industrial applications.
Can the 12V DC Cartridge Heater be customized to different shapes or sizes?
Yes, we offer full OEM and ODM services. Whether you need specific dimensions, wattage, or design features, we can customize the heater to meet your exact specifications.
How fast can I expect delivery after placing an order?
Our manufacturing process is streamlined to ensure quick production and delivery. We prioritize fast lead times to avoid any delays in your operations, particularly if you're in industries like plastic molding or semiconductor production where time-sensitive processes are crucial.
What industries use cartridge heaters?
Cartridge heaters are widely used in industries such as electronics, automotive, medical devices, plastic molding, semiconductor, and aerospace. They are designed for precision heating applications in both industrial and commercial sectors.
Do you offer after-sales support for your products?
Absolutely! We believe in providing ongoing support even after your purchase. Our team is available to assist with installation, troubleshooting, or any technical questions you might have regarding the 12V DC cartridge heater.
Hot Tags: 12v dc cartridge heater, China, manufacturers, suppliers, factory, customized, 12 Volt Cartridge Heater, DC Pencil Heater, Electric Heating Element Cartridge Heater, High Temperature Insertion Cartridge Heater, Pencil Type Heater, Stainless Steel Cartridge Rod Heaters



