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Wuhan Global Metal Engineering Co., Ltd

                                 The pioneer manufacturer of heaters & sensors

Home ProductsCartridge Heaters

Metal Screen Electrical Heating Elements for Plastic Molding Machine , Heating System

Metal Screen Electrical Heating Elements for Plastic Molding Machine , Heating System

    • Metal Screen Electrical Heating Elements for Plastic Molding Machine , Heating System
    • Metal Screen Electrical Heating Elements for Plastic Molding Machine , Heating System
  • Metal Screen Electrical Heating Elements for Plastic Molding Machine , Heating System

    Product Details:

    Place of Origin: China
    Brand Name: GME
    Certification: ISO/CE/UL/CSA

    Payment & Shipping Terms:

    Minimum Order Quantity: 50pcs
    Price: USD 1-100 FOB Shanghai/pc
    Packaging Details: Exported Case Packing
    Delivery Time: 7-15Wroking Days
    Payment Terms: T/T, Western Union, L/C,PayPal
    Supply Ability: 10000pcs/Month
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    Detailed Product Description
    Product Name: Plastic Molding Machine Heating Element Lead Wire Pprotection: Metal Screen Sleeve
    Water Proof: IP65 Resistance Wire: Cr20Ni80
    Working Life: 1-5years Tolerance Of Length: +/-1.5%
    Wattage: 0.5-15KW
    High Light:

    electric cartridge heaters


    cartridge heater with thermocouple

    Metal Screen Cartridge Heaters for Plastic Molding Machine Heating System




    The cartridge heater may be divided in 7 main parts:

    Heating Coil; Insulation; Sheath; Sealing; Termination; Lead Wire Type; Watt Density


    A cartridge heater is a tube-shaped, heavy-duty, industrial joule heating element electrical resistance used in the process heating industry, usually custom manufactured to a specific watt density, based on

    its intended application. Highly compacted they reach a surface watt density of up to 50 W/cm².


    Insulation is used to prevent the Nichrome coil to contact the sheath. If such event happened, it would ground the resistance and potentially produce a catastrophic short-circuit, resulting in a melted sheath and a major equipment failure. Damage can be mitigated by installing a ground fault interrupting circuit. To prevent the coil from touching the sheath, the coil is inserted into the sheath, and immediately filled with Magnesium Oxide (MgO). To ensure the MgO fills the empty space between the sheath and the coil, the cartridge heater is vibratory filled.


    The sheath is the part of the cartridge heater which makes contact with the material or substance to be heated. Several metal alloys are used, depending on the type of application, such as highly acidic or corrosive environments. The most common types of sheaths are 304 Stainless Steel, 316 Stainless Steel, and Incoloy 800. Incoloy has the highest temperature rating, it is considered a Superalloy.


    After the cartridge heater has been filled with MgO, a seal is applied to the open end of the cartridge heater (where the Nicrome coil was introduced), this prevents the coil and the MgO from coming out.  Also, it prevents contamination, such as plastic debris, air, or moisture, to go inside the heater.


    Since cartridge heaters are installed in a wide variety of machines, manufacturers must design the heaters to meet certain clearances.[5] [dead link] The cartridge heaters might be terminated with the leads coming out straight, or in a right angle. Also, manufacturer must be careful that the leads are not exposed to temperatures higher than the maximum rating for the lead wire. In order to prevent lead wire damage from temperature, movement or contamination, the lead wire can be protected with metal conduit, braided metal or silicone sleeves.





    1. Resistance wire: NiCr20/80

    2. Insulation: Magnesium Oxide Powder

    3. Sheath material: stainless steel304,316,321,incoloy800, incoloy840

    4. Voltage supply:110v,220v,230v

    5. Wattage supply:0.5kw-15kw optional

    6. Diameter:6-25mm

    7. Lead wire length:20-30cm

    8. Wattage tolerance:+5%/-10%

    9. Length tolerance:±5%

    10. Water proof:IP65






    1. Seal Bars

    2. Torpedo Heaters for injection molding

    3. Injection molding manifolds

    4. Mass Spectrometry

    5. Rubber molding

    6. Food production

    7. Immersion Tank heating

    8. HVAC Compressors

    9. Fuel Cell

    10. Semiconductor

    11. Medical Devices

    12. Sensor measurement devices

    13. Extrusion

    14. Die Casting

    15. Hot melt adhesives

    16. Heat Staking/ Hole Punch

    17. Plastic welding

    18. Fluid heating





    Contact Details
    Wuhan Global Metal Engineering Co., Ltd

    Contact Person: Frank

    Tel: +8615058960276

    Send your inquiry directly to us (0 / 3000)