Dow Dowsil 6-1125 CV Sealant Datasheet Dow Dowsil 6-1125 CV Sealant

Information provided by Gluespec
  • Description for Dow Dowsil 6-1125 CV Sealant

    • One-part • White • Non-flow space grade adhesive • Non-flowing • Room temp cure

    *See Terms of Use Below

    Brand Dowsil
    Application Type Bond, Sealant
    1 Part or 2 Part 1 Part
    Material Form Pre-Cure: Paste, Post-Cure: Elastomer
    Substrate Aluminum
    Industry Smart Meters, Satellite
    Manufacturer Dow
    Chemistry Silicone elastomer
    Cure Method RTV, Moisture
    Cure Temperature (°C) 20 to 25
    Cure Time (min) 2,880
    Viscosity (cPs) Non-flow
    Color White
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
  • Technical Data for Dow Dowsil 6-1125 CV Sealant

    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 1 Part
    • Material Form
      • Elastomer - Post-Cure: Elastomer
      • Paste - Pre-Cure: Paste
    • Substrate
    • Industry
      • Smart Meters
      • Satellite
      • Other - High temperature space-grade adhering, High temperature space-grade sealing
    • Chemistry
    • Application Method
      • Dispenser - Automated or manual needle dispense
    • Cure Method
      • Moisture / Condensation Cure - Moisture
      • RTV (Room Temperature Vulcanization) - RTV
    • Color
      • White
    • Brand
      • Dowsil
    • Also Known As
      • Old Name - 6-1125 CV Sealant
    Cure Specs
    Cure Temperature (°C) 20 to 25
    Cure Time (min) 2,880
    Viscosity (cPs) Non-flow
    Tack Free Time (min) 65 Test Method
    Work / Pot Time (min) 25 Test Method
    Bond Strength
    Peel Strength (piw) 32 (ppi), 121 (ppi) Test Method
    Shear Strength (psi) 230, 400 Test Method
    Tear Strength (piw) 195 (ppi) Test Method
    Tensile Strength (psi) 985
    Material Resistance
    Environmental Resistance Environmental resistance
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Dissipation Factor 0.00155, <0.00017 Test Method
    Dielectric Strength (V/mil) 550
    Dielectric Constant 2.62, 2.61 Test Method
    Thermal Conductivity (W/m°K) 0.20
    Volume Resistivity (O) 1.27E+15 (ohms/cm)
    Shore A Hardness 43
    Elongation (%) 7
    Flexibility Flexible
    Modulus (psi) 140 Test Method
    Other Properties
    Specific Gravity 1.100 Test Method
    Coefficient of Thermal Expansion (CTE) 350 ( ppm/ºC) Test Method
    Business Information
    Shelf Life Details For best results, Dow Corning RTV adhesives should be stored at or below 25°C (77°F). 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) 77
    Shelf Life (mon) 12
    Not Good For
    Don't Use With Plastic, rubber
  • Best Practices for Dow Dowsil 6-1125 CV Sealant

    *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

      Upon standing, some filler may settle to the bottom of the liquid containers after several weeks. To ensure a uniform product mix, the material in each container should be thoroughly mixed prior to use. Two-part materials should be mixed in the proper ratio (1:1 or 10:1) either by weight or volume. The presence of light colored streaks or marbling indicates inadequate mixing.

    3. Deairing/Degassing

      Automated airless dispense equipment can be used to reduce or avoid the need to de-air. If de-airing is required to reduce voids in the cured elastomer, consider a vacuum de-air schedule of >28 inches Hg for 10 minutes or until bubbling subsides.

    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.

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Tack Free Time Test Methods
Tack Free Time Tack Free Temperature
65 min 25°C
Work / Pot Time Test Methods
Work / Pot Time Test Method Temperature
25 min Skin Over Time 25°C
Peel Strength Test Methods
Peel Strength Type Test Method
32 (ppi) 180 Degree Peel Strength Unprimed Adhesion
121 (ppi) 180 Degree Peel Strength Primed Adhesion
Tear Strength Test Methods
Tear Strength Test Method
195 (ppi) Die B
Shear Strength Test Methods
Shear Strength Type Substrate Test Method
230 psi Lap shear strength Aluminum Unprimed Adhesion
400 psi Lap Shear Strength Aluminum Primed Adhesion
Dielectric Constant Test Methods
Dielectric Constant Test Method
2.62 At 100 Hz
2.61 At 100 kHz
Dissipation Factor Test Methods
Dissipation Factor Test Method
0.00155 At 100 hz
<0.00017 At 100 kHz
Modulus Test Methods
Modulus Test Method
140 psi Tensile Modulus
Coefficient of Thermal Expansion (CTE) Test Methods
Coefficient of Thermal Expansion (CTE) CTE Test Method
350 ( ppm/ºC) By TMA
Specific Gravity Test Methods
Specific Gravity Test Method
1.100 Cured