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    SYLTHERM™

    SYLTHERM™ 800, SYLTHERM™ XLT, and SYLTHERM™ HF Silicone Fluids are low viscosity fluids that offer excellent heat transfer performance and can provide exceptionally long service life, often more than 10 years, without periodic reclaiming.

SYLTHERM™ 800

SYLTHERM™ 800 fluid is a highly stable, long-lasting, silicone fluid designed for high-temperature liquidphase operation. It has a recommended operating temperature range of -40°F (-40°C) to 750°F (400°C). Operating continuously at the upper end of this range, SYLTHERM™ 800 fluid exhibits low potential for fouling and can often remain in service for 10 years or more.

The fluid is essentially odorless and is low in acute oral toxicity. Silicone heat transfer fluids such as SYLTHERM™ 800 fluid are not listed as reportable under SARA Title III, Section 313.1.

SYLTHERM™ XLT

SYLTHERM™ XLT heat transfer fluid is a specially formulated, high performance silicone polymer designed for use as a low temperature, liquid phase heat transfer medium. With a recommended use temperature range of -150°F to 500°F (-100°C to 260°C), SYLTHERM™ XLT fluid offers outstanding low temperature heat transfer and pumpability, plus excellent thermal stability.

In addition, SYLTHERM™ XLT fluid has essentially no odor, is low in acute oral toxicity, and is not listed as reportable under SARA Title III, Section 313.1. The operating range of SYLTHERM™ XLT fluid makes it ideal for single fluid process heating and cooling applications (batch processing).

SYLTHERM™ HF

SYLTHERM™ HF heat transfer fluid is a specially formulated, high performance silicone polymer designed for use as a low temperature, liquid phase heat transfer medium. With a recommended use temperature range of -100°F to 500°F (-73°C to 260°C), SYLTHERM™ HF fluid offers outstanding low temperature heat transfer and pumpability, plus excellent thermal stability. 

Like other SYLTHERM™ fluids, SYLTHERM™ HF has essentially no odor, is low in acute oral toxicity, and is not listed in the U.S.A. as reportable under SARA Title III, Section 313.1. The operating range of SYLTHERM™ HF fluid makes it ideal for single fluid process heating and cooling applications (batch processing).
    PropertySYLTHERM™ 800SYLTHERM™ XLTSYLTHERM™ HF
    Temperature use range, °F-40 to 750-150 to 500-100 to 500
    Vapor pressure, psiaMax. 197.32Max. 75.46Max. 39.76
    Thermal conductivity, btu/(hr·ft²)(°F/ft)Min. 0.085
    Max. 0.037
    Min. 0.078
    Max. 0.0295
    Min. 0.0752
    Max. 0.0274
    Specific heat, liquid, btu/(lb·°F)Min. 0.360
    Max. 0.539
    Min. 0.363
    Max. 0.544
    Min. 0.347
    Max. 0.543
    Viscosity, cpsMin. 51.0
    Max. 0.25
    Min. 90.17
    Max. 0.18
    Min. 16.65
    Max. 0.22
    Density, liquid, lb/ft³Min. 61.9
    Max. 34.3
    Min. 61.2
    Max. 38.1
    Min. 60.31
    Max. 39.28
    Freezing point, °F<-40-158<-115
    Flash point, °F, closed cup320116145
    Autoignition temperature, °F725662671

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