Dow Corning Dowsil DC 1200 OS Non Porous Surface Primer 500ml HAN2575

Dow Corning Dowsil DC 1200 OS Non Porous Surface Primer 500ml HAN2575

Code: 3282210

Barcode: 5413278250896

Colour: Clear

Size: 500ml Safety Tin

Dow Corning Dowsil 1200 OS Non-Porous Primer – 500ml – Professional Adhesion Enhancer

Air drying primer supplied as a dilute solution moisture reactive materials in volatile siloxane dilute solution of reactive materials in low viscosity siloxane, for preparing substrate surfaces prior to sealant application etc. Primer for silicone elastomers, silicone foams, adhesives, silicones and sealants Dowsil 1200 OS remains active over several hours after application and provides a much stronger bond, used to improve both the quality and speed of adhesion development to room temperature vulcanizing silicone sealants

The Dow Corning Dowsil 1200 OS Non-Porous Primer is a high-performance adhesion promoter specifically designed to improve the bonding of silicone sealants and adhesives to non-porous surfaces. Engineered for glass, metals, some plastics, and other smooth substrates, this primer ensures a superior, long-lasting bond, enhancing both durability and performance. Ideal for professional use in construction, glazing, and industrial applications, this primer is an essential component when working with difficult-to-bond materials. offering excellent adhesion without compromising air quality. Whether applied to coated glass, aluminium, stainless steel, or painted surfaces, this primer preps the substrate for maximum sealant effectiveness, ensuring a strong and reliable bond in both interior and exterior environments.

Features and Applications

• Optimized for Non-Porous Surfaces: Improves adhesion on glass, metals, plastics, and other smooth materials.
• Enhances Bond Strength: Increases the durability of silicone sealants, reducing the risk of failure in demanding conditions.
• Low-VOC Formula: Safer for use in enclosed spaces, reducing solvent emissions for improved air quality.
• Fast-Drying Performance: Dries quickly, allowing for efficient workflow and rapid application of sealants.
• Professional-Grade Reliability: Suitable for use in construction, glazing, and industrial bonding applications.
• Weather and Chemical Resistant: Ensures a long-lasting bond even in extreme environmental conditions.

Common Applications

1. Glazing and Window Sealing: Prepares glass and aluminium surfaces for strong sealant adhesion.
2. Metal Bonding: Improves the performance of silicone sealants on stainless steel, coated metal, and anodized aluminium.
3. Plastic Sealing: Enhances adhesion to PVC, acrylic, and other synthetic materials.
4. Painted and Coated Surfaces: Helps sealants bond effectively to pre-painted or treated surfaces.
5. Construction and Industrial Applications: Used in high-performance sealing and structural bonding work.

Sealants such as:

Dow Corning Dowsil C60

Dow Corning Dowsil 791

Dow Corning Dowsil 796

and all other external use mastic sealants to a variety of common non-porous substrates.

Colour: Clear

How to Use Dow Corning Dowsil 1200 OS Non-Porous Primer

1. Surface Preparation: Ensure the substrate is clean, dry, and free from dust, grease, or contaminants, Cornertape Sealant Prep Wipes can be used
2. Apply the Primer: Using a clean brush or lint-free cloth, apply a thin, even layer to the non-porous surface, a thin layer will give the best adhesion, high humidity should be avoided.
3. Allow to Dry: Let the primer dry for 15 to 90 minutes, depending on environmental conditions.
4. Apply Sealant or Adhesive: Once fully dried, proceed with silicone sealant or adhesive application for a secure bond.

Specifications

• Brand: Dowsil
• Product Name: 1200 OS Non-Porous Primer
• Size: 500ml
• Application Surface: Non-porous substrates (glass, metals, some plastics, painted surfaces)
• Drying Time: 10-90 minutes
• VOC Content: Low

Frequently Asked Questions

1. Why is a primer necessary for non-porous surfaces?
Non-porous surfaces, such as glass, metal, and some plastics, often have smooth finishes that reduce adhesion. Dowsil 1200 OS Primer creates an intermediary layer that improves the bonding strength of silicone sealants, ensuring durability and long-term performance.

2. Can this primer be used on porous surfaces like brick or concrete?
No, Dowsil 1200 OS is specifically formulated for non-porous materials. For porous surfaces such as masonry or concrete, a different primer designed for absorbent substrates would be required.

3. How long should I wait before applying sealant after using the primer?
The primer typically dries in 10-90 minutes, depending on temperature and humidity. It is important to apply the sealant soon after the primer has dried to ensure maximum adhesion.

4. Is this primer suitable for both indoor and outdoor applications?
Yes, Dowsil 1200 OS Primer is weather-resistant and chemical-resistant, making it suitable for both interior and exterior applications. It provides a long-lasting bond in exposed conditions such as high humidity, UV exposure, and temperature fluctuations.

5. How should I store this primer, and what is its shelf life?
Store the primer in a cool, dry place away from direct sunlight and heat sources. Ensure the container is tightly sealed after use to prevent evaporation. When stored correctly, Dowsil 1200 OS has a shelf life of approximately 18 months unopened from the date of manufacture.

"Important Note this is a non returnable product

While in our care all primers and surface activators are kept in a climate controlled store room.

We recommend storing this product out of direct sunlight until used.

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