Silicone Rubber Heaters
Immersion Heaters for Tanks, Vessels & Industrial Liquid Heating
Our submersible heating tubes deliver efficient, reliable immersion heating for water, oil, chemicals, and other industrial liquids. Designed for direct tank or vessel installation, they feature corrosion-resistant sheaths, high-temperature MgO insulation, and customizable lengths and wattages to match your exact process requirements..
Applications
• Industrial water heating & storage tanks
• Thermal oil & heat transfer systems
• Chemical process heating• Food & beverage processing
• Pharmaceutical manufacturing
• Marine & offshore applications
All submersible heaters are manufactured under IATF 16949 and carry CE marking and RoHS compliance.
CE & UL Certified
All heating elements carry CE marking (EU) and UL certification (North America). RoHS and REACH compliant materials standard.
Custom Engineering
OEM/ODM welcome. Custom voltage, wattage, dimensions, and connector configurations. Drawings and samples reviewed within 24 hours.
IATF 16949 Quality
Automotive-grade quality management. Every product undergoes 100% electrical testing before shipment.
EU Warehouse Support
Stock available in our Netherlands warehouse for fast delivery across Europe. Local technical support in English.
Technical Specifications
| Property | Standard Range |
|---|---|
| Sheath Material | SS304 / SS316 / Incoloy / Copper |
| Insulation | High-purity MgO |
| Max Watt Density | 15 W/cm² (water) / 5 W/cm² (oil) |
| Max Operating Temp | Up to 800°C (sheath) |
| Tube Diameter | 8mm – 25mm |
| Heated Length | 100mm – 3000mm |
| Voltage | Up to 480V, 3-phase available |
| Power Range | 0.5 kW – 100 kW per element |
| Mounting | Threaded / flanged / weld-in |
| Certifications | CE, RoHS, UL (E511579) |
Application Examples
• Industrial water & boiler tanks
• Thermal oil heating systems
• Chemical process vessels
• Food processing vats & kettles
• Pharmaceutical batch heating
• Marine fuel & lube oil heating
• Power generation coolant systems
• Paint & coating tanks
Custom Immersion Heater?
Share your tank dimensions, liquid, temperature, and wattage. We'll calculate the ideal solution.
Need an Immersion Heater for an Open Tank or Basin?
Tell us the tank size, liquid type, voltage and required temperature rise. We will recommend the right tube material, wattage and overheat protection.
Frequently Asked Questions
What is the MOQ for submersible heating tubes?+
There is no rigid MOQ. Single units for maintenance and small projects are welcome, as well as batch orders. For custom lengths or wattages, any practical minimum depends on specifications and is stated in your quote.
Can length, wattage and voltage be customized?+
Yes. Tubes are built to order for your tank: custom length and wattage, common European voltages (220V–480V, single- or three-phase), sheath in SS304, SS316 or copper for freshwater, and cable lead or terminal box termination. Every tube includes an integrated thermal cut-off for overheat protection and is rated IP68 for full submersion.
What is the difference between a submersible tube and a flange heater?+
Submersible tubes are placed directly into open tanks, basins or simple penetrations without complex flange hardware — fast to install and easy to remove. Flange heating elements bolt onto a pressurized or closed vessel and suit higher power and engineered pressure systems. If your tank is closed or pressurized, ask us about flange heaters.
Which sheath material is safe for my liquid?+
Copper and SS304 suit normal freshwater applications; SS316 is recommended where treatment chemicals or mild corrosion are present. For saltwater, aquaculture with dosing chemicals, or aggressive process liquids, contact us first — a flange heater in a higher-grade alloy may be the safer solution.
Are the tubes certified and stocked in Europe?+
Submersible heating tubes are CE marked and RoHS compliant, manufactured under IATF 16949, and 100% electrically tested. Selected standard items ship from our warehouses in Germany and the Netherlands; custom builds are produced to order with lead time confirmed on the proforma invoice.
What are the payment terms?+
New customers pay T/T with 30% deposit and 70% balance before shipment. Terms for repeat accounts can be reviewed after a consistent order history.
What does the warranty cover?+
Tubes are warranted against manufacturing defects. They must be fully immersed while energized — damage caused by dry firing, scale buildup, incompatible liquids or improper wiring is not covered. Warranty terms are provided with every quotation.
Selection Guide
| Typical Application | Key Considerations | Recommended Selection Direction |
|---|---|---|
| Open water tanks & cisterns | Simple installation, freshwater, overheat safety | SS304 tube with integrated thermal cut-off and cable lead |
| Swimming pools & spas | Chlorine / treatment chemicals, corrosion | SS316 sheath; confirm water chemistry before ordering |
| Freeze protection for outdoor tanks & pipes | Weather, automatic control, full submersion | IP68 tube with thermal cut-off, paired with a thermostat; see our Heat Pump Freeze Protection Kit for packaged solutions |
| Agriculture, greenhouses & aquaculture | Water quality, additives, gentle heating | SS304 for freshwater; SS316 where dosing chemicals are used; avoid copper for aggressive water |
| Industrial process liquids | Chemistry, temperature, watt density | SS316 build for mild chemistries; refer to flange heating elements for severe media or high power |
| Pressurized or closed piping systems | Pressure, sealed mounting | Choose flange heating elements instead of a submersible tube |