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XIAMETER® Silicones Simplified - from Dow Corning



Dow Corning® 999-A Silicone Building & Glazing Sealant is an easily applied, one-part sealant that cures in the presence of atmospheric moisture to produce a durable and flexible glazing and curtainwall seal.

XIAMETER® Brand Purchase Options

XIAMETER® Distributors

You may purchase many of our fluids, silanes and emulsions through distributors.

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XIAMETER® Standard Purchase

Easy access to standard silicones available at market-based prices.

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XIAMETER® Specials

Standard silicones at attractive prices!

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XIAMETER® Product Family Pricing

Purchase multiple items within our product families and receive greater discounts.

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Typical Properties

*These values are typical properties and are not intended for use in preparing specifications.

  • Color
    • Aluminum
    • Black
    • Bronze
    • Clear
    • Custom
    • Light Bronze
    • White
  • Durometer - Shore A = 25 Shore A
  • Peel Strength = 20 ppi
  • Service Temperature High = 177 Deg C
  • Service Temperature Low = -60 Deg C
  • Tack-Free Time-50% RH
    • 10 Minutes
    • 20 Minutes
  • Tear Strength = 25 ppi
  • Tensile Strength = 325 psi
  • Volatile Organic Content = 40 g/liter
  • Water Resistant 



*These values are typical properties and are not intended for use in preparing specifications.

Adhesive Properties :

  • Adhesion to Alodine Aluminum
  • Adhesion to Aluminum
  • Adhesion to Anodized Aluminum
  • Adhesion to Ceramic
  • Adhesion to Glass
  • Adhesion to Heat Strengthened Glass
  • Adhesion to Low E Coated Glass
  • Adhesion to Metal
  • Adhesion to Paint
  • Adhesion to Steel
  • Primerless Adhesion

Cure Properties :

  • Condensation Cure

General Properties :

  • Tooling Required

Product-Use Properties :

  • Parts Supplied

Resistance :

  • Ozone Resistance
  • Thermal Resistance
  • UV Resistance
  • Water Resistance


  • United States Regulations
    • ASTM (American Society of Testing and Materials International)
      • ASTM C 920


Product Data Sheets

Product Literature