Ultra Heat Resistant UHR Grade Conveyor Belt

HILFLEX® Ultra Heat Resistant Rubber Conveyor Belts (250 & 300 Series)

Uncompromising Performance for Extreme Temperatures up to 300°C

For the Hottest Materials on Earth. Uncompromising Performance.

When the material temperature crosses 250°C and nothing less than exceptional will do, HILFLEX® 250 & 300 Series belts deliver unmatched heat resistance and durability. These belts are specially designed to perform where standard heat-resistant belts fail—handling the harshest loads like red-hot sinter, furnace discharge slag, boiler ash, and more.

Engineered with proprietary EPDM-based compounds, they offer sustained performance in continuous temperatures up to 300°C, making them the ultimate solution for extreme heat industrial material handling.

♨️ Extreme Thermal Endurance – Compliant with IS 1891 (Part II)

Every HILFLEX® UHR belt is crafted using a next-generation EPDM compound designed specifically for ultra-high heat exposure. Even during continuous contact with blazing materials, these belts retain their physical integrity and structural stability.
They are engineered to resist:

• Severe Hardening & Brittleness due to thermal aging
• Deep Cracking & Surface Glazing from repeated heat cycles
• Softening & Loss of Adhesion under extreme stress

Available Grades (As per IS 1891 Part II):

💪 Engineered for the Harshest Industrial Conditions

More than just heat-resistant, these belts are fortified to endure the most aggressive mechanical, thermal, and impact conditions:

• Advanced Carcass Structure:
  Multi-ply EP or NN fabrics treated to resist shrinkage and maintain dimensional stability even in high-heat cycles.
• Reinforced Bonding:
  Enhanced adhesion between layers prevents delamination, ensuring structural safety during extreme thermal shock.
• Outstanding Wear Resistance:
  High-abrasion top cover handles slag, clinker, coke, and other rough materials without cutting or gouging the belt.
• Flexible at High Temps:
  Maintains pliability over pulleys and idlers, reducing mechanical strain and extending pulley life.

✅ Key Benefits of HILFLEX® Ultra Heat Resistant Belts

• Maximum Uptime: Built to endure without cracking, deforming, or disintegrating under the highest material temperatures.
• Low Lifecycle Costs: Longer service life and fewer breakdowns reduce maintenance frequency and spare part replacement.
• High Operational Safety: Withstands aggressive conditions without failure, protecting people, equipment, and processes.
• Consistent Throughput: Ensures uninterrupted flow of high-temperature materials, avoiding production delays.
• Custom Options: Available with RipStop, flame retardant properties, oil resistance, or other customizations based on material type and handling requirements.

🏭 Industries & Applications That Demand UHR Belts

These belts are indispensable in facilities with extreme process temperatures and continuous bulk handling:

• Sinter & Pellet Plants – Hot sinters and pellets at discharge points
• Steel & Iron Foundries – Red-hot castings, hot molding sand
• Furnace Discharge Systems – Slag and direct furnace material handling
• Cement Plants – Clinker handling from rotary kilns
• Thermal Power Stations – High-temperature ash disposal systems
• Incineration Units & WtE Plants – Handling incinerator ash and waste byproducts
• Coke Plants – Coke handling in dry quenching zones

💡 Recommendations for Maximizing Belt Life

Even with ultra-heat resistance, optimal belt performance depends on several critical factors:

• Material Abrasiveness: Rough and sharp particles accelerate wear.
• Loading Impact: Minimize free fall and control material flow at loading points.
• Material Size & Shape: Sharp edges can lead to surface cuts or gouging.
• Belt Length & Speed: Long and high-speed belts require special considerations for heat dissipation.
• Chemical Exposure: Combustion residue or chemical fumes may degrade standard compounds.

💡 Use of thicker top covers (5 mm or more) is highly recommended to shield the carcass from direct heat.

📐 Technical Specifications

📩 Need a Custom Fit or Technical Proposal?

To recommend the perfect UHR belt configuration for your plant or process, please share the following:

• Material Temperature Range – Continuous & peak
• Material Type – Slag, sinter, ash, coke, clinker, etc.
• Belt Specs – Width, length, ply, and cover thickness
• Site Layout & Loading Info – Drop height, loading frequency, idler spacing, etc.
• Other Conditions – Dust, moisture, oil, chemical fumes, etc.

👉 Once received, we’ll guide you with the optimal HILFLEX® 250 or 300 belt, complete technical specs, and pricing tailored to your operation.

HILFLEX® 250 & 300 Series:
Engineered for Fire. Trusted for Performance.

Frequently Asked Questions

What is the temperature range of a UHR conveyor belt?

HILFLEX® 250 handles material up to 250°C and HILFLEX® 300 up to 300°C. The safe continuous temperature depends on the application, so share the material temperature measured on the belt and we will confirm the grade.

What is the difference between SHR and UHR belts?

SHR (HR T2) suits material up to about 150°C, and HR T3 takes peaks up to 180°C. UHR is for hotter material, from 250°C up to 300°C, such as hot sinter, clinker discharge and red-hot coke.

Where are UHR conveyor belts used?

In steel, sinter and pellet plants, cement clinker discharge, foundries, and boiler and incinerator ash handling.