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DOWSIL 690 Neutral Silicone

One-component neutral-cure silicone sealant for versatile applications.

DOWSIL 690 Neutral Silicone is a one-component, neutral-cure silicone sealant designed for efficient sealing in various construction and contracting applications. It offers excellent adhesion to numerous substrates without requiring primer and possesses remarkable durability against weathering, moisture, and temperature fluctuations.
Ideal for perimeter sealing of windows and doors, it ensures a reliable and long-lasting bond with ease of application.

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Technical Details

DOWSIL 690 Neutral Silicone is suitable for a variety of sealing applications, ensuring versatility and reliability in its performance:

  • Perimeter sealing of windows

  • Perimeter sealing of doors

  • Multi-purpose sealing applications in construction

  • General household sealing tasks

DOWSIL 690 Neutral Silicone offers a range of benefits that enhance its performance and usability across various sealing applications:

  • Good unprimed adhesion to a wide range of substrates
  • Neutral cure; will not corrode galvanized/zinc-coated steel or attack concrete
  • Excellent resistance to weathering, ultra-violet radiation, moisture, and temperature extremes
  • Meets the requirements of ISO11600 – 20LM
  • Movement capability of ± 50%
  • Non-sag sealant for easy application in vertical joints
  • Ready to use as supplied, ensuring simplicity and efficiency in application

DOWSIL 690 Neutral Silicone is characterized by a variety of technical specifications that ensure its efficacy and reliability in sealing applications:

Test Property Unit Result
Cure system Neutral
Application temperature °C +5 to +50
Application temperature °F +41 to +122
Specific gravity (Clear) 1.03
Specific gravity (Colored) 1.4
Tack Free Time min 30
Flow, Sag or Slump Nil
Ultimate Tensile Strength MPa 1.00
Ultimate Elongation at Break % 300
Hardness (Shore A) – Clear 25
Hardness (Shore A) – Colored 31
Movement Capability % ± 50
Service Temperature °C -20 to 120

Applications of DOWSIL 690 Neutral Silicone include various sealing tasks, making it a versatile choice for both construction and general household use:


Perimeter Sealing of Windows:
DOWSIL 690 is ideal for sealing gaps around window frames, providing an effective barrier against moisture and air infiltration.
Perimeter Sealing of Doors:
This sealant is also suitable for sealing door frames, ensuring a tight seal that enhances energy efficiency and prevents water entry.
Multi-Purpose Sealing Applications:
DOWSIL 690 can be utilized in a wide range of other sealing applications throughout the construction and contracting industry.
General Household Sealing Tasks:
Its ease of application makes it a preferred option for various household sealing tasks, offering reliable performance for everyday needs.

Packaging Information for DOWSIL 690 Neutral Silicone:


DOWSIL 690 Neutral Silicone is supplied in the following packaging options:
  • 280 ml cartridges packed in boxes of 24
  • 600 ml sausages packed in boxes of 20

Available colors include clear, white, bronze, grey, and black.

Warranty Information for DOWSIL 690 Neutral Silicone:


For detailed warranty information and assistance, please contact our SMCC team using any of the available contact methods on this page.

Product FAQ

DOWSIL 690 can effectively adhere to various substrates including metal, concrete, glass, and wood.
No, primer is generally not required for non-porous surfaces.
The movement capability of DOWSIL 690 is ± 50%.
DOWSIL 690 is not suitable for wet areas or submerged applications.
Yes, DOWSIL 690 is suitable for outdoor applications due to its excellent resistance to weathering, ultraviolet radiation, and moisture.
DOWSIL 690 is not suitable for use in wet areas or submerged applications.

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For expert guidance and support regarding DOWSIL 690 Neutral Silicone, please reach out to our SMCC team. We are committed to providing construction and contracting companies with the necessary information and solutions to ensure successful application and optimal results for your sealing projects.

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