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A polydimethylsiloxane liquid with operating temperature ranges of -40 °F to 750 °F (-40 °C to 400 °C).




Product Overview

Highly stable, long-lasting silicone fluid designed for high temperature liquid phase operation.


Used in NDC, Lube Oil Recycling, Heat Recovery, Polymer Processing, Carbon Fiber

Product Specifications

Temperature: -40 to 750 °F
Vapor Pressure: 197.32
Specific Heat: 0.360 °F
Viscosity: 51.0
Density: 61.9
Freezing Point: < -40 °F
Flash Point: 320 °F
Autoignition: 725 °F
Primary Chemistry: polydimethylsiloxane

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SYLTHERM™ Silicone Thermal Fluids

SYLTHERM™ silicone thermal fluids are specially formulated, high performance polymers designed for use as a low temperature, liquid phase heat transfer medium. They are known for their low viscosity, which offers excellent heat transfer performance and long service life. The fluids meet operating requirements for highly technical applications such as oil and gas processing, chemical processing, solar energy manufacturing, and pharmaceutical reactions.

Silicone fluids often have a lower long-term operating cost because they do not degrade like typical hydrocarbon fluids and as a result, rarely need to be replaced.

» Learn more about Dow Heat Transfer Fluids

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