Dow 999-A Silicone Building & Glazing Sealant Datasheet Dow 999-A Silicone Building & Glazing Sealant

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  • Description for Dow 999-A Silicone Building & Glazing Sealant

    Long life, wide service temperature range; resists sunlight, moisture and ultraviolet radiation.

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    Chemical Resistance Sleet, Snow
    Application Type Seal
    1 Part or 2 Part 1-Part
    Material Form Paste
    Substrate Glass, Metal, Plastic
    Manufacturer Dow
    Chemistry Silicone
    Cure Method Moisture
    Cure Temperature (°C) 25
    Cure Time (min) 10,080
    Ozone Resistance Ozone resistance
    High Temperature Resistance (°C) 177
    Low Temperature Resistance (°C) -60
    Other Resistance Sunlight
    Key Specifications ASTM (American Standard Test Method): C 920: Meets the qualifications of ASTM C 920 Specification, Class 25, FDA (U.S. Food & Drug Administration) and/or CFIA (Canadian Food Inspection Agency): Meets the qualifications of FDA 21 CFR 177.2600 (check colors for compliance)

  • Technical Data for Dow 999-A Silicone Building & Glazing Sealant

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    Overview
    • Chemical Resistance
      • Chemical Resistance - Sleet, Snow
    • Application Type
    • 1 Part or 2 Part
      • 1-Part
    • Material Form
      • Paste
    • Substrate
    • Industry
    • Chemistry
    • Application Method
      • Dispenser - Air-operated guns, Bulk dispensing equipment
    • Cure Method
      • Moisture / Condensation Cure - Moisture
    • Key Specifications
      • ASTM (American Standard Test Method) : C 920 : Class 25 - Meets the qualifications of ASTM C 920 Specification, Class 25
      • FDA (U.S. Food & Drug Administration) and/or CFIA (Canadian Food Inspection Agency) : 177.2600 - Meets the qualifications of FDA 21 CFR 177.2600 (check colors for compliance)
    Specifications
    Cure Specs
    Cure Temperature (°C) 25 Test Method
    Cure Time (min) 10,080 Test Method
    Tack Free Time (min) 10 to 20 Test Method
    Bond Strength
    Peel Strength (piw) 20 (pli) Test Method
    Tear Strength (piw) 25 (ppi), 4.4 (kN/m) Test Method
    Tensile Strength (psi) 325 Test Method
    Material Resistance
    Ozone Resistance Ozone resistance
    UV Resistance UV resistance
    Environmental Resistance Rain
    High Temperature Resistance (°C) 177
    Low Temperature Resistance (°C) -60
    Other Resistance Sunlight
    Hardness
    Shore A Hardness 25 Test Method
    Not Good For
    Don't Use For green or partially vulcanized rubber gaskets or tapes
    Don't Use With masonry, impregnated woodl, oil-based caulks

  • Best Practices for Dow 999-A Silicone Building & Glazing Sealant

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  • Comparable Materials for Dow 999-A Silicone Building & Glazing Sealant

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    Spec Engine® Results

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    • Momentive
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      Momentive RTV1473 is a 1-Part Atmospheric Moisture Silicone rubber Paste used to Seal Silicone Rubber, Adhesion to many substrates and Metals

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
25°C As Cured – 7 days at 25°C (77°F) and 50% RH
Cure Time Test Methods
Cure Time Test Method
10,080 min As Cured – 7 days at 25°C (77°F) and 50% RH
Tack Free Time Test Methods
Tack Free Time Test Method
10 to 20 min ASTM C 679
Tensile Strength Test Methods
Tensile Strength Cure Time Cure Temperature Cure Humidity Test Method
325 psi 10,080 min 25°C 50 % Ultimate, ASTM D 412
Peel Strength Test Methods
Peel Strength Cure Time Cure Temperature Cure Humidity Test Method
20 (pli) 10,080 min 25°C 50 % ASTM C 794
Tear Strength Test Methods
Tear Strength Cure Time Cure Temperature Cure Humidity Test Method
25 (ppi) 10,080 min 25°C 50 % ASTM D 624, As Cured – 7 days at 25°C (77°F) and 50% RH
4.4 (kN/m)
Shore A Hardness Test Methods
Shore A Hardness Shore Hardness Test Method Hardness Temperature
25 ASTM D 2240, 7 days at 25°C (77°F) and 50% RH 25°C