Dow Fluorogel 4-8022 Datasheet Dow Fluorogel 4-8022

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  • Description for Dow Fluorogel 4-8022

    Extremely soft, thermal/mechanical shock and vibration damping, excellent dielectric properties, solvent and fuel resistant, flexible cure schedule, reversion resistant, thick section cure, compatible with automated dispensing equipment, and physical and electrical stability over a wide temperature range.

    Note: This material has been discontinued. Please view the Comparable Materials tab or call us at (262) 293-7970 for additional help.

    *See Terms of Use Below

    Chemical Resistance Fuel, Chemical Resistance: Solvent
    Application Type Seal
    1 Part or 2 Part 1-Part
    Material Form Gel
    Industry Circuits, Electronics, Optoelectronics
    Manufacturer Dow
    Chemistry Silicone, Solvent-free
    Cure Method Addition cure, Heat
    Cure Temperature (°C) 20 to 25, 125, 150
    Cure Time (min) 60, 30
    Viscosity (cPs) 725
    Color Translucent
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Volume Resistivity (O) 1.2E+12 (ohms/cm)
    Light Refractive Index (RI) High, 1.3900
  • Technical Data for Dow Fluorogel 4-8022

    • Chemical Resistance
      • Chemical Resistance - Fuel
      • Chemical Resistance : Relative Solvent Resistance - Solvent
    • Application Type
    • 1 Part or 2 Part
      • 1-Part
    • Material Form
      • Gel
    • Industry
    • Application Method
      • Dispenser - Automated dispensing equipment
    • Cure Method
      • Heat
      • 2-Part Cure - Addition cure
    • Color
      • Translucent
    Cure Specs
    Cure Temperature (°C) 20 to 25, 125, 150
    Cure Time (min) 60, 30
    Viscosity (cPs) 725
    Work / Pot Time (min) 43,200 Test Method
    Material Resistance
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Moisture/Humidity Resistance Moisture/humidity resistance
    Dissipation Factor 0.55900, 0.00318 Test Method
    Dielectric Strength (V/mil) Excellent, 375
    Dielectric Constant 7.09, 7.10 Test Method
    Volume Resistivity (O) 1.2E+12 (ohms/cm)
    Shore A Hardness 50 g
    Flexibility Soft, Flexible, Resilient
    Other Properties
    Light Refractive Index (RI) High, 1.3900
    Specific Gravity 1.230 Test Method
    Coefficient of Thermal Expansion (CTE) 540 (Linear (micron/m °C or ppm ))
    Business Information
    Shelf Life Details Storage conditions and shelf life (“Use By” date) are indicated on the product label.
    Shelf Life Temperature (°F) 41
    Shelf Life (mon) 9
  • Best Practices for Dow Fluorogel 4-8022

    *See Terms of Use Below

    1. Mixing

      Some gels are supplied in bladder packs that avoid direct air contact with the liquid gel components, allowing use of air pressure over the pack in a pressure pot for dispensing. Do not apply air pressure directly to the liquid gel surface (without the bladder pack) as the gel can become supersaturated with air and bubbling can occur when the material is dispensed and cured. Use of bladder packs prevents bubbling, maintains cleanliness and avoids gel contamination. Gels can be dispensed manually or by using one of the available types of meter mix equipment. If possible, the potential for entrapment and incorporation of gas (typically air) should be considered during design of the part and selection of a process to dispense the gel. This is especially important with higher-viscosity and fastercuring gels. Degassing at >28 inches (10-20 mm) Hg vacuum may be necessary to ensure a void-free, protective layer.

    2. Testing

      If a substrate or material is questionable with respect to potentially causing inhibition of cure, a small-scale compatibility test should be run to ascertain suitability in a given application. The presence of liquid or uncured product at the interface between the questionable substrate and the cured gel indicates incompatibility and inhibition of cure. In certain situations, toughened gels may appear fully cured but have reduced or no adhesion. This may result from slight inhibition at the interface.

  • Comparable Materials for Dow Fluorogel 4-8022

    *See Terms of Use Below

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Work / Pot Time Test Methods
Work / Pot Time Temperature
43,200 min 25°C
Dielectric Constant Test Methods
Dielectric Constant Test Method
7.09 Dielectric Constant at 100 Hz
7.10 Dielectric Constant at 100 kHz
Dissipation Factor Test Methods
Dissipation Factor Test Method
0.55900 Dissipation Factor at 100 hz
0.00318 Dissipation Factor at 100 kHz
Specific Gravity Test Methods
Specific Gravity Test Method
1.230 Uncured