Did you know there are many options to consider when selecting thermal fluids?

  1. Temperature is Everything – match your bulk temperature but also consider film temperature, heater type
  2. Controlling Oxidation – high temperature air exposure can destroy the wrong fluid quickly
  3. Maximizing Fluid Life – short-term or long-term use – invest wisely
  4. Availability is Critical – thermal fluids are often critical to production – how long can you wait for your thermal fluid to ship?
  5. Reliable Service & Support – thermal fluids are maintenance-intensive, but can your vendor help you if there are problem

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PRODUCTS

Duratherm FG

Rated to 327°C (620°F), Duratherm FG is a thermal fluid with strong resistance to fouling for extended service and is engineered and manufactured to comply with the demands of food grade applications. Meets USDA requirements for incidental food contact (H1), meets the requirements of 21 CFR 178.3570 and is registered with the NSF HT1.

  • Food grade - NSF registered and meets FDA 21 CFR 178.3570
  • Rated to 327°C (620°F), it’s one of the highest temperature food grade thermal fluids available
  • Kosher certified
  • Extended service life
  • Dual-stage anti-oxidant protects against oxidation
Standard
Metric

Temperature Ratings

Max Bulk/Use Temp 327°C
Max Film Temp. 355°C
Pour Point ASTM D97 -17°C

Safety Data

Flash Point ASTM D92 227°C
Fire Point ASTM D92 242°C
Autoignition ASTM E-659-78 362°C

Thermal Properties

Thermal Expansion Coefficient 0.1016 %/°C
Thermal Conductivity W/m·K
38°C 0.144
100°C 0.140
204°C 0.133
260°C 0.130
288°C 0.130
316°C 0.128
Heat Capacity kJ/kg·K
38°C 1.968
100°C 2.172
204°C 2.515
260°C 2.696
288°C 2.788
316°C 2.881

Physical Properties

Viscosity ASTM D445 cSt
40°C 40.35
100°C 6.51
204°C 1.56
260°C 1.03
288°C 0.88
316°C 0.76
Density ASTM D1298 kg/l
38°C 0.85
100°C 0.80
204°C 0.73
260°C 0.70
288°C 0.68
316°C 0.66
Vapor Pressure ASTM D2879 kPa
38°C 0.00
100°C 0.00
204°C 0.40
260°C 2.62
288°C 5.52
316°C 10.89
Distillation Range ASTM D2887
10% 383°C
90% 494°C
Molecular Weight 395
Specific Gravity @ 16°C 0.863

Note: The values quoted in the table above are typical of normal production.
They do not constitute a specification.

Temperature Ratings

Max Bulk/Use Temp 620°F
Max Film Temp. 670°F
Pour Point ASTM D445 1°F

Safety Data

Flash Point ASTM D92 440°F
Fire Point ASTM D92 466°F
Autoignition ASTM E-659-78 682°F

Thermal Properties

Thermal Expansion Coefficient 0.0564 %/°F
Thermal Conductivity BTU/hr·ft·F°
100°F 0.083
212°F 0.081
399°F 0.077
500°F 0.075
550°F 0.075
Heat Capacity BTU/lb·F°
100°F 0.470
212°F 0.519
399°F 0.601
500°F 0.644
550°F 0.666

Physical Properties

Viscosity ASTM D445 cSt
40°F 308.34
100°F 44.44
260°F 3.96
Density ASTM D1298 lb/ft³
100°F 52.73
212°F 50.12
399°F 45.75
500°F 43.40
550°F 42.23
Vapor Pressure ASTM D2879 psia
100°F 0.00
212°F 0.00
399°F 0.06
500°F 0.38
550°F 0.80
Distillation Range ASTM D2887
10% 721°F
90% 921°F
Molecular Weight 395
Specific Gravity @ 60°F 0.863

Note: The values quoted in the table above are typical of normal production.
They do not constitute a specification.