• Description for Dow CY 51-019

    Noncorrosive; good flow; good adhesion.

    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

    Application Type Seal, Gasket, Bond
    1 Part or 2 Part 2 Part
    Material Form Liquid, Silicone elastomer
    Substrate Ceramics, Glass, Reactive metals, Plastics, Resins
    Industry Solar cell, Solar cell
    Manufacturer Dow
    Chemistry Silicone elastomer
    Cure Method Part A/Part B, RTV
    Cure Temperature (°C) Faster or lower, 20 to 25, 20 to 25
    Cure Time (min) Rapid
    Viscosity (cPs) 11,000
    Color White
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
  • Technical Data for Dow CY 51-019

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 2 Part
    • Material Form
      • Elastomer - Silicone elastomer
      • Liquid
    • Substrate
    • Industry
    • Chemistry
    • Cure Method
      • 2-Part Cure - Part A/Part B
      • RTV (Room Temperature Vulcanization) - RTV
    • Color
      • White
    Specifications
    Cure Specs
    Cure Temperature (°C) Faster or lower, 20 to 25, 20 to 25
    Cure Time (min) Rapid
    Viscosity (cPs) 11,000
    Tack Free Time (min) Fast Test Method
    Work / Pot Time (min) 240 Test Method
    Thixotropic Good
    Mix Ratio 10:1 (by volume)
    Bond Strength
    Shear Strength (psi) 120 Test Method
    Tensile Strength (psi) 160
    Material Resistance
    Environmental Resistance Environmental resistance
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Moisture/Humidity Resistance Moisture/humidity resistance
    Conductivity
    Dissipation Factor 0.00400 Test Method
    Dielectric Strength (V/mil) Good, 19,685,039, Durable
    Dielectric Constant 3.10 Test Method
    Volume Resistivity (O) 4E+12 (ohms/cm)
    Hardness
    Shore A Hardness 34
    Elongation (%) 2
    Flexibility Flexible
    Other Properties
    Specific Gravity 1.270
    Business Information
    Shelf Life Details Shelf life is indicated by the “Use Before” date found on the product label. 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 Type from date of manufacture
    Shelf Life (mon) 12
    Not Good For
    Don't Use With Plastic, rubber
  • Best Practices for Dow CY 51-019

    *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.

  • Comparable Materials for Dow CY 51-019

    *See Terms of Use Below

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Tack Free Time Test Methods
Tack Free Time Tack Free Temperature
Fast
Work / Pot Time Test Methods
Work / Pot Time Temperature
240 min 25°C
Shear Strength Test Methods
Shear Strength Type
120 psi Lap shear strength
Dielectric Constant Test Methods
Dielectric Constant Test Method
3.10 Dielectric constant, 1 MHz
Dissipation Factor Test Methods
Dissipation Factor Test Method
0.00400 Dissipation factor, 1 MHz