Dow Z-6689 Water Repellant

Dow Z-6689 Water Repellant Datasheet
  • Description for Dow Z-6689 Water Repellant

    Reduces water absorption into substrates; solvent free siloxane; dilutable in organic solvents; UV stable; performs at low solids levels.

    *See Terms of Use Below

    Application Type Seal
    1 Part or 2 Part 1 Part
    Material Form Liquid
    Manufacturer Dow
    Chemistry Solvent-free
    Cure Method Moisture
    Chemical Resistance Liquid water
    Density (g/cm³) 8.01 (lbs/gal)
  • Technical Data for Dow Z-6689 Water Repellant

    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 1 Part
    • Material Form
      • Liquid
    • Chemistry
    • Application Method
      • Roll - Roller
      • Brush
      • Spray - Airless sprayer
    • Cure Method
      • Moisture / Condensation Cure - Moisture
    Material Resistance
    Chemical Resistance Liquid water
    Other Properties
    Specific Gravity 0.960 Test Method
    Flash Point (°F) 50.0
    % Solids (%) 100, 93
    Density (g/cm³) 8.01 (lbs/gal)
    Business Information
    Shelf Life Details When stored in original, airtight containers at or below 35°C (95°F), Dow Corning Z-6689 Water Repellent has a shelf life of 1 year from date of manufacture. Refer to product packaging for “Use By” date. Keep away from heat and open flame.
    Shelf Life Type from date of manufacture
    Shelf Life (mon) 12
  • Best Practices for Dow Z-6689 Water Repellant

    *See Terms of Use Below

    1. Surface Preparation

      Surfaces should be free of standing water, surface dirt, dust, oils and other contaminants.

    2. Application

      Methods of application include airless sprayer, roller and brush. When a brush or roller is used, repeated applications should be made until the surface remains moist for a few minutes. If an airless sprayer is used, application should continue until the substrate is thoroughly saturated. On vertical applications, material should be applied from the bottom up and achieve a 6- to 8-inch rundown. Sprayers should be fitted with solvent resistant hoses and gaskets. To ensure compatibility and the desired water repellent result, a test application is necessary on each surface to be treated. Surfaces should be free of standing water, surface dirt, dust, oils and other contaminants. Formulated Dow Corning Z-6689 Water Repellent may be applied to damp or wet surfaces, although dry surfaces are preferred to achieve maximum penetration into the substrate. As with most repellents, plants or shrubs should be protected from exposure to the treatment. Windows and any other material that should not be treated must be protected or cleaning with solvents may be necessary to remove the treatment. Likewise, if applied as spray, control overspray and drift to prevent contamination of nearby substrates, especially windows, vehicles, etc.

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Specific Gravity Test Methods
Specific Gravity Temperature
0.960 25°C