Dow Dowsil SE 1720 CV

Dow Dowsil SE 1720 CV Datasheet
  • Description for Dow Dowsil SE 1720 CV

    • Two-part • Flowable • 1:1 mix ratio • Heat cure • Energy and time savings when cured at lower temperature or times

    *See Terms of Use Below

    Brand Dowsil
    Application Type Sealing, Gaskets, Bonding
    1 Part or 2 Part 2 Part
    Material Form Liquid
    Substrate Ceramics, Glass, Reactive metals, Plastics, Many reactive metals, Selected plastics
    Industry Circuit boards, Connectors, Electronic components, Flyback transformer, ECUs, Sealing PCB module components, Electronic modules, Electronics parts
    Manufacturer Dow
    Chemistry Silicone
    Cure Method Heat, 2-Part Cure
    Cure Temperature (°C) Faster or lower, 70, 80, 100
    Cure Time (min) Fast, 50, 30, 10
    Viscosity (cPs) 85,000, Non-slump, 89,700
    Color White
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
  • Technical Data for Dow Dowsil SE 1720 CV

    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 2 Part
    • Material Form
      • Liquid
    • Substrate
      • Ceramic - Ceramics
      • Glass
      • Metal - Reactive metals
      • Plastic - Plastics, Many reactive metals, Selected plastics
      • Other - Laminates, Selected resins
    • Industry
      • Electronic Control Unit - ECUs
      • Electronics - Electronic components, Electronic modules, Electronics parts
      • Printed Circuit Board (PCB) - Circuit boards, Sealing PCB module components
      • Connectors
      • Transformers - Flyback transformer
      • Power Supplies - Power modules
      • Industrial - Condensers, Housing seals, Lids
      • Other - Bonding agent for key pad of PC, Sealing ceramic condensers
    • Chemistry
    • Application Method
      • Dispenser - Automated or manual needle dispense
    • Cure Method
      • Heat
      • 2-Part Cure
    • Color
      • White
    • Brand
      • Dowsil
    Cure Specs
    Cure Temperature (°C) Faster or lower, 70, 80, 100
    Cure Time (min) Fast, 50, 30, 10
    Viscosity (cPs) 85,000, Non-slump, 89,700 Test Method
    Tack Free Time (min) Fast Test Method
    Work / Pot Time (min) 360 Test Method
    Mix Ratio 1:1 (by volume)
    Bond Strength
    General Bond Strength (psi) High
    Shear Strength (psi) 240 Test Method
    Tensile Strength (psi) 480
    Material Resistance
    Environmental Resistance Environmental resistance
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Moisture/Humidity Resistance Moisture resistance
    Dissipation Factor 0.00200 Test Method
    Dielectric Strength (V/mil) Good, Durable, 650
    Dielectric Constant 2.70 Test Method
    Volume Resistivity (O) 3.0 E+16 (ohms/cm)
    Elongation (%) 375
    Flexibility Flexible
    Other Properties
    Specific Gravity 1.060 Test Method
    Business Information
    Shelf Life Details Shelf life is indicated by the “Use Before” date found on the product label.
    Shelf Life Temperature (°F) 77
    Shelf Life (mon) 9
    Not Good For
    Don't Use With Plastic, rubber
  • Best Practices for Dow Dowsil SE 1720 CV

    *See Terms of Use Below

    1. Surface Preparation

      All surfaces should be thoroughly cleaned and/or degreased with Dow Corning® brand 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. Mixing

      Dow silicone 1:1 adhesives are supplied in two parts that do not require lot matching. The 1:1 mix ratio, by weight or volume, simplifies the proportioning process. To ensure uniform distribution of filler, Parts A and B must each be thoroughly mixed prior to their combination in a 1:1 ratio. When thoroughly blended, the Part A and B liquid mixture should have a uniform appearance. The presence of light colored streaks or marbling indicates inadequate mixing and will result in incomplete cure. For fast-curing adhesives automated mix and dispense equipment should be utilized.

    3. Deairing/Degassing

      In applications sensitive to air entrapment, de-airing with 28 to 30 inches Hg vacuum is required.

    4. 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.

  • Comparable Materials for Dow Dowsil SE 1720 CV

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Tack Free Time Test Methods
Tack Free Time Tack Free Temperature
Viscosity Test Methods
Viscosity Test Method
85,000 cPs
89,700 cPs Mixed
Work / Pot Time Test Methods
Work / Pot Time Test Method Temperature
360 min Pot Life 25°C
Shear Strength Test Methods
Shear Strength Type Substrate Test Method
240 psi Lap shear strength Aluminum Unprimed Adhesion
Dielectric Constant Test Methods
Dielectric Constant Test Method
2.70 1 MHz
Dissipation Factor Test Methods
Dissipation Factor Test Method
0.00200 1 MHz
Specific Gravity Test Methods
Specific Gravity Test Method
1.060 Cured