Dow Corning Dowsil 799 Plastic Glass Metal Silicone Sealant 310ml White Clear

Dow Corning Dowsil 799 Plastic Polycarbonate PVC Glass and Metal Silicone Sealant 310ml

Colours

• 4068772 - White
• 4068751 - Clear

Dow Corning White or Clear Dowsil 799 neutral curing silicone sealant for use in glazing and curtain walling applications, A NEW FORMULA with advanced adhesion to PVCu Plastics Polycarbonate and metals. Excellent adhesion to both porous and non-porous substrates, can be use in glazing applications that utilise plastics such as polycarbonate and Perspex sheeting and for perimeter pointing of door and window frames, has Excellent weather resistance against sunlight, rain, snow, and temperature extremes, non-corrosive will not react with or corrode common building materials, factory-applied glass where it would serve as the primary seal bedding compound in a finished sash

Dow Corning Dowsil 799EU Benefits:

• Excellent adhesion to polycarbonate.
• Excellent weathering characteristics.
• Resistance to ozone.
• Resistant to UV radiation & temperature extremes.
• Low Modulus Neutral cure type
• 5 minutes working time.
  
• Fast cure.
• Tack free in 2 hours.
• Application Temperature Range +5 to +40 Degree C.
• + or - 50% Joint movement capability.
  
• Conforms to ISO 11600-F&G-25LM.

Dow Corning Dowsil 799 Plastic, Glass, and Polycarbonate Silicone Sealant – White & Clear (310ml)

Achieve high-performance sealing available in both white and clear designed specifically for bonding and sealing sensitive materials like plastic, polycarbonate, and glass, this low-modulus, neutral cure sealant offers exceptional adhesion without causing stress or damage to delicate substrates. Whether for glazing, cladding, or interior projects, this premium sealant ensures long-lasting protection with a clean, professional finish.

Why Choose Dow Corning Dowsil 799EU Silicone Sealant?

The Dow Dowsil 799 is formulated to provide strong, flexible sealing on materials that are prone to damage from traditional acidic sealants. Its neutral cure composition ensures compatibility with sensitive surfaces like polycarbonate, acrylic, and plastics, preventing stress cracking and corrosion. With excellent UV and weather resistance, this sealant is ideal for both internal and external applications, delivering long-term performance in challenging environments. Available in clear and white finishes, it offers both aesthetic versatility and durability.

Key Features and Benefits of Dowsil 799

• Designed for Sensitive Materials: Ideal for bonding and sealing plastics, polycarbonate, acrylic, and glass without causing surface damage.
• Low Modulus for Flexibility: Absorbs joint movement, preventing cracking or stress on fragile materials.
• Neutral Cure Formula: Non-corrosive and safe for use on sensitive and coated surfaces.
• Weather and UV Resistant: Provides long-lasting protection against moisture, UV rays, and temperature fluctuations.
• Professional Finish: Available in both clear and white, allowing for seamless integration into various design applications.
• Strong Adhesion: Bonds effectively to a wide range of surfaces, including glass, metals, and composite materials.
• Durable Performance: Maintains its integrity and flexibility over time, even in harsh environmental conditions.
• Material Compatibility: Specifically designed to bond sensitive materials without causing stress cracking or damage.
• Enhanced Durability: Resistant to UV rays, weather, and temperature extremes, making it ideal for outdoor use.
• Versatile Appearance: Available in both white and clear, offering aesthetic flexibility for various applications.
• Cost-Effective Performance: Long-lasting seals reduce maintenance and replacement costs over time.
• Easy Application: Smooth, low-modulus formula ensures effortless application and tooling for a professional finish.

Applications

The Dow Corning Dowsil 799 Silicone Sealant is suitable for a variety of professional and DIY applications, including:

1. Glazing and Window Sealing: Provides a secure, flexible seal for glass and polycarbonate windows and panels.
2. Plastic and Polycarbonate Bonding: Ideal for sealing joints and edges on sensitive materials without causing stress cracks.
3. Interior and Exterior Cladding: Offers reliable protection for external cladding panels, ensuring weatherproof seals.
4. Commercial Installations: Suitable for high-visibility areas where aesthetics and performance are equally important.
5. DIY and Home Projects: Perfect for sealing shower enclosures, skylights, and other features made from glass or plastic.
6. Industrial Applications: Provides a durable seal in environments exposed to extreme weather or temperature fluctuations.

How to Use Dow Corning Dowsil 799 Silicone Sealant

Follow these steps for optimal application of the Dow Corning Dowsil 799 Silicone Sealant:

1. Prepare the Surface: Ensure all surfaces are clean, dry, and free from dust, grease, or old sealant residues.
2. Cut the Nozzle: Trim the nozzle at an angle to match the desired bead size and attach it to the cartridge.
3. Load the Cartridge: Insert the cartridge into a compatible caulking gun for easy application.
4. Apply the Sealant: Run a consistent bead along the joint, pressing firmly to ensure full adhesion.
5. Tool the Joint: Smooth the bead immediately using a tooling stick or finger dipped in soapy water to create a neat finish.
6. Allow to Cure: The sealant will skin over in approximately 30 minutes and fully cure within 24-48 hours, depending on conditions and joint size.

Specifications

• Brand: Dow Corning (Dowsil)
• Product Name: 799 Plastic, Glass, and Polycarbonate Silicone Sealant
• Quantity: Single cartridge (310ml)
• Application: Glazing, cladding, and bonding of sensitive materials like plastics and glass
• Cure Type: Neutral
• Weather Resistance: UV-stable and waterproof
• Colour Options: White and Clear

Frequently Asked Questions

1. Why is this sealant ideal for polycarbonate and plastic materials?
The Dow Dowsil 799 uses a neutral cure formula, which prevents stress cracking and corrosion on sensitive materials like polycarbonate, acrylic, and plastic. Traditional acidic sealants can damage these materials, making the 799 a safer and more effective choice for long-term performance.

2. Can this sealant be used for both indoor and outdoor applications?
Yes, Dow Dowsil 799 is designed for versatile use in both interior and exterior environments. It offers excellent UV stability, moisture resistance, and weatherproofing, ensuring durable performance even in harsh outdoor conditions.

3. What surfaces can this sealant bond to?
This silicone sealant bonds effectively to a variety of surfaces, including plastics, polycarbonate, glass, metal, and composite materials. For optimal adhesion, ensure the surfaces are clean, dry, and free from contaminants before application.

4. How does the availability of both clear and white finishes enhance project flexibility?
The option to choose between clear and white finishes allows professionals to tailor the sealant’s appearance to their project’s aesthetic needs. The clear finish is ideal for seamless integration in glazing and transparent applications, while the white finish provides a polished look for areas with white or light-coloured materials.

5. How should unused cartridges be stored to maintain their quality?
Store unused cartridges in a cool, dry place away from direct sunlight and heat. Ensure the nozzle is sealed to prevent air exposure, which can cause curing inside the cartridge. When stored correctly, the sealant has a shelf life of up to 12 months from the date of manufacture.

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(When Sealing plastics always do an adhesion test prior to full application, 799 will not stick to polyethylene or polypropylene.)

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