

SYLTHERM™ - High Performance Heat Transfer
These specialty DImethyl Polysiloxane based thermal fluids provide the best-in-class performance heat transfer with exceptionally long lifespans. These silicone fluids provide for precision temperature control over the broadest thermal range available.
Grade | Recommended Use Temperature Range | Viscosity @ 25°C | Freeze Point | Flash Point Closed Cup |
---|---|---|---|---|
-40°C to 400°C (-40°F to 750°F) | 9.1 cps | -60°C -76°F | 160°C 320°F | |
SYLTHERM™ XLT | -100°C to 260°C (-150°F to 500°F) | 1.4 cps | -111°C -168°F | 47°C 116°F |
SYLTHERM™ HF | -73°C to 260°C (-100°F to 500°F) | 1.7 cps | <-82°C <-115°F | 63°C 145°F |
SYLTHERM™ Solutions
There are three specialty grades of the SYLTHERM™ thermal fluids that offer the option for optimal temperature stability and viscosity.




![]() | SYLTHERM™ 800 provides exceptional lifespan with the highest thermal stability up to 750°F. Designed for liquid phase heat transfer with additional performance benefits, including:
Click here to view more ► |
Common Application for Syltherm™ 800
Syltherm™ 800 is chosen for a variety of industrial applications including, but not limited to:

SYLTHERM™ HF
SYLTHERM™ HF provides best-in-class performance for low temperature, liquid phase thermal transfer applications. It is the ideal solution for sub-zero applications including environmental chambers & grocery store freezer loops.
Click here to view more ► |
Common Application for Syltherm™ HF
Syltherm™ HF is chosen for a variety of industrial applications including, but not limited to:Pharmaceutical Cooling — Single Fluid Cooling — Environmental Test Chambers — Heat Transfer Skids — Applications Needing Non-toxic via Oral Ingestion Rating — Applications Needing High Closed Cup Flash Point — Applications Needing Specialty Electrical Classification


SYLTHERM™ XLT
SYLTHERM™ XLT is an excellent thermal fluid for batch processing applications requiring a liquid phase heat transfer. Providing premium performance for single fluid processes & cooling systems in pharmaceutical and fine chemical processing.
Click here to view more ► |
Common Application for Syltherm™ XLT
Syltherm™ XLT is chosen for a variety of industrial applications including, but not limited to:Pharmaceutical Cooling — Single Fluid Cooling — Environmental Test Chambers — Vacuum Distillation — Freeze Dryers — Applications Needing Non-toxic via Oral Ingestion Rating — Applications to Replace Chlorinated Solvents in Cooling Applications


