Dow Dowsil SE 9187 L Adhesive Datasheet Dow Dowsil SE 9187 L Adhesive

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  • Description for Dow Dowsil SE 9187 L Adhesive

    One-part, black, clear (translucent) or white, fast tack-free, controlled volatility adhesive with very low viscosity.

    *See Terms of Use Below

    Brand Dowsil
    Application Type Adhesive, Potting, Conformal coating
    1 Part or 2 Part 1-Part
    Material Form Liquid, Silicone elastomer
    Substrate Cceramic, Glass, Many reactive metals, Selected plastics
    Industry Rigid circuit boards, Sensors, PCB protection, Connectors, Smart Meters, E-Mobility Solutions, Smart Home Devices, Display module assembly, Headlamp assemblies, Electronic components, Flexible circuit boards, Relays
    Manufacturer Dow
    Chemistry Polydimethylsiloxane, Silicone elastomer, Solvent-free
    Cure Method RTV, Moisture, Room temperature cure
    Cure Temperature (°C) 20 to 25 Room Temperature
    Viscosity (cPs) Very low, 1,100, Controlled, Excellent flow, Self-leveling
    Color Black, White, Translucent
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Volume Resistivity (O) 3.0E+15 (ohms/cm)
    Key Specifications UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 94HB (black only)
  • Technical Data for Dow Dowsil SE 9187 L Adhesive

    • Application Type
    • 1 Part or 2 Part
      • 1-Part
    • Material Form
      • Elastomer - Silicone elastomer
      • Liquid
    • Substrate
      • Ceramic - Cceramic
      • Glass
      • Metal - Many reactive metals
      • Plastic - Selected plastics
      • Other - Selected laminates, Selected resins
    • Industry
      • Smart Meters
      • Smart Home Devices
      • Electronic Displays - Display module assembly
      • E-Mobility Solutions
      • Headlamp - Headlamp assemblies
      • Electronics - Electronic components, Flexible circuit boards, Relays, Rigid circuit boards
      • Sensors
      • Printed Circuit Board (PCB) - PCB protection
      • Connectors
      • Industrial - CD, DVD, HDD
    • Chemistry
    • Application Method
      • Dispenser - Automated or manual needle dispensing systems
    • Cure Method
      • Room Temperature / Air Dry - Room temperature cure
      • Moisture / Condensation Cure - Moisture
      • RTV (Room Temperature Vulcanization) - RTV
    • Color
      • Translucent
      • Black
      • White
    • Key Specifications
      • UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association) : UL 94 HB - UL 94HB (black only)
    • Brand
      • Dowsil
    Cure Specs
    Cure Temperature (°C) 20 to 25 Room Temperature
    Viscosity (cPs) Very low, 1,100, Controlled, Excellent flow, Self-leveling
    Tack Free Time (min) Fast, 8 Test Method
    Work / Pot Time (min) >86,400 Test Method
    Bond Strength
    Shear Strength (psi) 40 Test Method
    Tensile Strength (psi) 65
    Material Resistance
    Flame Resistance Good flame resistance
    Environmental Resistance Environmental resistance
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Dissipation Factor 0.00090 Test Method
    Dielectric Strength (V/mil) 500
    Dielectric Constant 2.80 Test Method
    Volume Resistivity (O) 3.0E+15 (ohms/cm)
    Shore A Hardness 17
    Elongation (%) 160
    Flexibility Soft
    Other Properties
    Specific Gravity 1.000 Test Method
    Business Information
    Shelf Life Details For best results, Dow Corning RTV adhesives should be stored at or below the storage temperature listed on the product label. Special precautions must be taken to prevent moisture from contacting these materials. Containers should be kept tightly closed with head or air space minimized. Partially filled containers should be purged with dry air or other gases, such as nitrogen. Shelf life is indicated by the “Use Before” date found on the product label.
    Shelf Life Temperature (°F) 90
    Shelf Life Type from date of manufacture
    Shelf Life (mon) 12
    Not Good For
    Don't Use With Non-reactive metal, Non-reactive plastic, Teflon, Polyethylene, Polypropylene, Plastic substrates, Rubber substrates, Highly plasticized
  • Best Practices for Dow Dowsil SE 9187 L Adhesive

    *See Terms of Use Below

    1. Surface Preparation

      All surfaces should be thoroughly cleaned and/or degreased with Dow OS fluids, naphtha, mineral spirits, methyl ethyl ketone (MEK) or other suitable solvent. Solvents such as acetone or isopropyl alcohol (IPA) do not tend to remove oils well, and any oils remaining on the surface may interfere with adhesion. Light surface abrasion is recommended whenever possible, because it promotes good cleaning and increases the surface area for bonding. A final surface wipe with acetone or IPA is also useful. Some cleaning techniques may provide better results than others

      users should determine the best techniques for their particular applications.

    2. Testing

      Due to the wide variety of substrate types and differences in substrate surface conditions, general statements on adhesion and bond strength are impossible. To ensure maximum bond strength on a particular substrate, 100 percent cohesive failure of the adhesive in a lap shear or similar adhesive strength test is desired. This ensures compatibility of the adhesive with the substrate being considered. Also, this test can be used to determine minimum cure time or can detect the presence of surface contaminants such as mold release agents, oils, greases and oxide films.

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Tack Free Time Test Methods
Tack Free Time Tack Free Temperature
8 min 25°C
Work / Pot Time Test Methods
Work / Pot Time Temperature
>86,400 min <29°C
Shear Strength Test Methods
Shear Strength Type Substrate Test Method
40 psi Lap shear strength Glass Unprimed Adhesion
Dielectric Constant Test Methods
Dielectric Constant Test Method
2.80 1 MHz
Dissipation Factor Test Methods
Dissipation Factor Test Method
0.00090 1 MHz
Specific Gravity Test Methods
Specific Gravity Test Method
1.000 Cured