Galden HT Fluids

Galden HT Fluids

Price on request:   Add to Inquiry Add to Wish List

Galden® HT PFPE fluids are inert, dielectric, and high-performance heat transfer fluids with boiling points ranging from 55°C to 270°C. A line of 11 different dielectric fluids, their broad range of boiling points allows the most suitable fluid to be selected for a particular application. Galden HT was developed to meet the increasingly demanding and diversified needs of various industries ranging from semiconductor to nuclear and pharmaceutical.

Galden HT fluids have excellent thermal and chemical stability, giving them good compatibility with materials. Thus, Galden HT fluids will not corrode or react with construction materials, nor will residues form from decomposition, corrosion, or fluid degradation.

Galden Heat Transfer Fluids are perfluorinated compounds that provide effective heat transfer both in direct and indirect cooling applications. Their unique compatibility with sensitive components makes them particularly suitable for direct cooling applications. Direct immersion cooling provides for more effective heat removal and therefore helps to keep the components’ temperatures constant. As a result, the failure rate is lower and the package size can be minimized.

The low relative viscosity of Galden HT fluids and their wide operating temperature range permit them to act as heat transfer liquids in extreme conditions.

Physical and Chemical Properties

  • High oxidative and thermal resistance
  • Non-toxic and non-ozone depleting
  • No flash or fire point
  • Excellent dielectric properties
  • Low pour point and water solubility
  • Relatively low viscosity
  • Complete absence of hydrogen
  • Excellent compatibility with metals, plastics, and elastomers


  • AISI 316
  • Copper
  • Brass
  • Iron
  • Nickel
  • Aluminum
  • Stainless steel
  • Bronze
  • PE low density
  • Polypropylene
  • Polycarbonate
  • ABS copolymer
  • Polyphenyloxide
  • PET
  • POM
  • PTFE
  • PVC
  • PMMA
  • Butyl rubber
  • NBR
  • EPDM
  • Natural rubber
  • Silicone rubber
  • Fluorosilicone

Areas of Application

  • Direct immersion
  • Etcher – PVD, CVD
  • Ion implanter
  • Radar
  • UF6 production
  • Transformer
  • Power supplies
  • Aggressive conditions
  • Freeze dryer

Galden HT Fluids
Typical PropertiesGalden HT
Specific Heat at 25ºC (cal/g*C)0.23
Thermal Conductivity at 25ºC (W/cm*C)0.0007
Coefficient of Expansion (cm3/cm3*C)0.0011
Dielectric Strength at 25ºC (KV, 2.54 mm gap)40
Dissipation Factor at 25ºC (1Khz)2x10-4
Solubility of Water (ppm, wt)14
Solubility of Air (cm3 gas, 100cm3 liquid)26
Galden HT Fluids
Typical PropertiesHT 55HT70HT90HT 110HT 135HT 170HT 200HT 230HT 270
Boiling Point (ºC)557090110135170200230270
Pour Point (ºC)<-110<-110<-110<-110<-100-97-85-77-66
Density at 25ºC (g/cm3)1.651.681.691.711.721.771.791.821.85
Kinematic Viscosity at 25ºC (cSt)0.450.50.750.7711.82.44.414
Vapor Pressure at 25ºC (torr)22514148178<1<1<1<10-2
Heat of Vaporization at Boiling Point (cal/g)221717171616151515
Surface Tension at 25ºC (dyne/cm)101416161718191920
Refractive Index at 25ºC1.
Dielectric Constant at 25ºC (1 Khz)1.861.861.
Volume Resistivity (Ohm-cm)1x10121x10151x10151x10156x10156x10156x10156x10156x1015
Average Molecular Weight34041046058061076087010201550
Galden HT Fluids
Part No.Price on request
HT 55
HT 110
HT 135
HT 170
HT 200
HT 230
HT 270