Selecting NSF HT1 Registered Food Grade Thermal Oil

TL;DR: Prioritize TEXFOOD HTF 35 for pressureless closed circuit thermal oil systems requiring high temperature heat transfer fluid up to 325°C. This Halal certified specialty lubricant Malaysia offers 2.88  kJ/kg.k heat capacity for maximum efficiency. Contact the LUBTEX supplier in Puchong for highly refined food grade oil purity.

Features

TEXFOOD HTF 35 operates across a temperature range of -10°C to a maximum bulk oil limit of 325°C. The fluid maintains chemical stability when the oil film temperature at heating elements remains below 340°C. It functions as a neutral medium with no perceptible odour or taste to prevent sensory contamination of food products. The formulation is compatible with standard elastomers, gaskets, seals, and paints typically found in food processing machinery.

Technical Data

• NSF Registration: Class HT1 (Incidental food contact)

• Max Bulk Oil Temperature: 325°C

• Max Oil Film Temperature: 340°C

• Density at 20°C: 865 kg/m3

• Kinematic Viscosity at 40°C: 35 mm2/s

• Kinematic Viscosity at 100°C: 5.8 mm2/s

• Flash Point: 218°C

• Fire Point: 256°C

• Pour Point: -18°C

• Specific Heat Capacity (at 316°C): 2.88 kJ/kg.K

• Thermal Conductivity (at 316°C): 0.121 W/m.K

• Vapour Pressure (at 316°C): 14.28 kPa

Applications

This fluid is intended for use in closed-circuit, pressureless heat transfer systems within food and beverage manufacturing. It is suitable for industrial frying, baking, and large-scale thermal processing where heating elements are used. It should not be used in open-air systems where the oil is continuously exposed to oxygen at high temperatures, as this will accelerate oxidation.
 

Why This Works

The high specific heat capacity of 2.88 kJ/kg.K at peak temperatures allows the fluid to carry significant thermal energy efficiently. The use of highly refined base oils ensures high oxidation stability, reducing the formation of sludge or carbon deposits that can insulate heating elements and cause system failure. Low vapour pressure at high temperatures prevents cavitation in pumps and maintains consistent system pressure.

Who This Is Suitable For / Not Suitable For

Suitable for food plant engineers in Malaysia requiring Halal-certified thermal fluids for incidental contact zones. It is appropriate for facilities operating under ISO 9001 and Good Manufacturing Practice (GMP) standards. Not suitable for systems where the heating element surface temperature exceeds 340°C or for applications requiring a synthetic-based lubricant with different chemical compatibility requirements.

How to Use

1. Verify the system is clean and free of moisture or previous non-food-grade oil residues.

2. Fill the closed-circuit system, ensuring adequate expansion tank volume for thermal expansion (coefficient 0.000760 per °C).

3. Establish a sufficient flow rate before activating heating elements to prevent localized overheating of the oil film.

4. Monitor bulk temperatures to stay within the -10°C to 325°C range.

5. Perform periodic oil analysis to check for degradation or contamination.

Common Mistakes to Avoid

Exceeding the 340°C oil film temperature limit leads to rapid thermal cracking and carbon buildup on heater surfaces. Mixing this fluid with non-food-grade lubricants voids the NSF HT1 registration and compromises food safety. Failing to account for thermal expansion can cause system over-pressurization or oil overflow from expansion tanks.

Safety & Compliance

The product is manufactured in facilities implementing ISO 9001 and Good Manufacturing Practices. It holds NSF HT1 registration for incidental food contact and is Halal certified. Storage should be in a dedicated area between 0°C and 40°C, away from direct sunlight and chemicals. Unopened containers have a recommended shelf life of 5 years; once opened, the product should be used within 2 years.

FAQ

What is the difference between H1 and HT1 registration? H1 covers general food-grade lubricants, while HT1 is specifically for heat transfer fluids used in primary heating and cooling circuits where incidental contact may occur.

Can this fluid be used in a system that reaches 350°C? No, the maximum bulk oil temperature is 325°C. Exceeding this limit will cause the oil to degrade prematurely.

Is this fluid compatible with existing seals? It is compatible with most elastomers and seals used in standard food machinery, but compatibility should be verified if using specialized high-temperature synthetic rubbers.

Does it have a strong smell? No, the fluid is formulated to be neutral in odour and taste to ensure it does not affect the quality of food products.
 

Stay connected with us

Visit our official Facebook page for the latest updates, check out our YouTube channel for exciting product demos, and explore the Davor website's News section for more insights.