DOWSIL™ 983 Structural Glazing Sealant is a two-part silicone formulation. As supplied, the base is a smooth, white paste and the curing agent is available in black or gray. Once catalyzed, the material cures to a high-modulus, flexible silicone rubber that is flexible for use in structural and/or weatherseal applications.


• DOWSIL™983 Structural Glazing Sealant is designed for specialized use where dual structural and weatherseal applications are desired for factory glazing and curtainwall production. Once cured, this structural sealant forms a durable, flexible, watertight bond that can be warranted for 20 years and used in ±25% movement weatherseal applications. It has excellent unprimed adhesion to glass, alodine, and anodized aluminum2, although DOWSIL™ Primer C is recommended for fast and consistent adhesion, especially to Kynar™ and other high-performance substrates approved for architectural structural glazing applications.


• Unprimed adhesion to most common construction materials
• A physical property profile that is more than sufficient for
structural adhesive and weatherseal applications
• A noncorrosive by-product
• Excellent weatherability,durability and recovery after repeated extension and
compression up to 25%

DOWSIL™ 983 Structural Glazing Sealant is compatible with reflective glass, laminated glass, and most insulating glass. It can be used in deep, narrow joints to obtain a full and complete cure.

Additional Info

  • Thickness (inches): N/A
  • Adhesive Type: 2-Part Silicone
  • Material Type: Silicone Caulk
  • Density: N/A
  • Colors: Black, Gray
  • Market: Solar, Facade
  • Cell Type: N/A
  • Liner: N/A
  • Adhesive Coating Options: N/A
  • Custom Colors: No
  • Custom Thickness: N/A
  • Custom Width (inches): N/A
  • Minimum Width (inches): N/A
  • Maximum Width (inches): N/A
  • Standard Length (feet): N/A

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