Caldera 6
PAG Heat Transfer Fluid
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Caldera 6 - PAG Heat Transfer Fluid

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Caldera 6 - PAG Heat Transfer Fluid

Product Description

Caldera 6 is a high-quality, PAG Heat Transfer Fluid used in open bath systems. The formulation is highly resistant to oxidative degradation resulting from exposure to the atmosphere. Caldera 6’s proprietary formulation is more oxidatively stable than other glycol-based heat transfer fluids, and provides hours of trouble-free service, even in the most demanding applications.


Temperature Range

Caldera 6 Temprange m+s



  • Open-bath systems
  • Closed and open loop system with a maximum bulk temperature of 500°F (260°C)


Performance Advantages

  • Ideal for open-bath systems - Resists fluid degradation from air exposure.
  • Low varnishing tendencies - Allows for clean operation and greater thermal transfer efficiency
  • Easy disposal - Can be disposed using standard oil recycling services.
  • Minimal odor
Typical Properties
Caldera 6
Minimum Temperature, °F (°C)
19 (-7)
Maximum Film Temperature, °F (°C)
550 (288)
Maximum Bulk Temperature, °F (°C)
500 (260)
Pour Point, °F (°C)
-40 (-40)
Flash Point, °F (°C)
445 (229)
Fire Point, °F (°C)
490 (254)
Autoignition Point, °F (°C)
691 (366)
Thermal Expansion Coefficient, %/°C
Thermal Conductivity @ 38°C, W/m-K
Thermal Conductivity @ 260°C, W/m-K
Heat Capacity @ 38°C, kJ/kg-K
Heat Capacity @ 260°C, kJ/kg-K
Distillation Range (ASTM D2887), 10% °C
Distillation Range, 90%
Average Molecular Weight


View complete Caldera Heat Transfer Fluid product information and thermal property data.

Fluid properties are typical results and should not serve as a sole resource for determining the correct fluid for a particular application. Please consult an Isel representative to ensure that the product is the correct choice for the application.

Caldera 6 Applications
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