Pack of 20 SikaFlex Construction Purform – One component polyurethane elastic sealant – 600cm³ – Brown

SikaFlex Construction Purform is a single-component, polyurethane-based elastic sealant ideal for construction applications. Developed by Sika, a renowned company for its construction and sealing products, this sealant is appreciated for its versatility and lasting performance.

Main Features

• Elasticity and Flexibility: SikaFlex Construction Purform remains elastic after curing, making it ideal for absorbing movements in joints. It can thus accommodate temperature variations and structural movements in materials.
• Single-Component: Unlike sealants that require mixing two components, this one is ready to use, simplifying application and reducing the risk of preparation errors.
• Adhesion Capacity: It adheres well to most common construction materials, such as concrete, brick, wood, aluminum, steel, and certain painted surfaces, with a primer recommended for some surfaces if needed.
• Purform Formula: This formula is designed to offer enhanced environmental performance and increased durability while meeting high safety standards.
• Joint Sealing Capacity: With a volume of 600 ml, it is particularly useful for large joints or projects requiring a high amount of sealant.

Typical Uses

SikaFlex Construction Purform is widely used in:

• Expansion and construction joints for buildings (walls, facades).
• Sealing between different structural elements in concrete or stone.
• Joints in both interior and exterior applications requiring good weather resistance.

Benefits

• UV and Weather Resistance: Useful for outdoor applications.
• Compatibility with Concrete and Porous Materials: Ideal for humid or exposed environments.
• Ease of Application: Can be applied with a pump and only requires surface smoothing after application for a clean finish.

Application Tips

For optimal application:

1. Prepare the Surfaces: Clean surfaces and apply a primer if necessary.
2. Use a Suitable Gun: Use a gun compatible with 600 ml pouches to apply the product.
3. Smooth the Joint: Once applied, smooth the joint before it begins to cure.

SikaFlex Construction Purform is an efficient and versatile sealant for professional applications, offering durable performance under demanding conditions.

Here are the main technical specifications of SikaFlex Construction Purform Single-Component Polyurethane Elastic Sealant (600 ml):

Technical Specifications

1. Composition: Single-component polyurethane (Purform formula).
2. Shore A Hardness: Approximately 40 (a measure of the sealant’s hardness once dry, indicating some flexibility without being too rigid).
3. Elasticity Modulus:
   • Low modulus, making it ideal for absorbing structural movement in joints subject to deformation.
4. Elongation at Break:
   • Approximately 600% (meaning it can stretch up to six times its length without breaking).
5. Skin Formation Time:
   • About 40 to 50 minutes at 23°C and 50% relative humidity (the time it takes for the sealant’s surface to begin curing after application).
6. Curing Time:
   • 2 to 4 mm per day at 23°C and 50% relative humidity (depending on the applied thickness and ambient conditions).
7. Temperature Resistance:
   • Once cured, the sealant can withstand temperatures from -40°C to +80°C, with peak resistance up to +100°C.
8. Application Temperature:
   • Between +5°C and +40°C (ideal for outdoor applications in moderate temperature conditions).
9. UV and Weather Resistance:
   • Good UV resistance, ensuring longevity in outdoor applications exposed to various weather conditions.
10. Adhesion:
    • Excellent adhesion to a range of construction materials: concrete, masonry, brick, wood, aluminum, steel, and some plastics.
    • Using a primer may be recommended for porous surfaces or to optimize adhesion on certain substrates.
11. Available Colors:
    • Generally available in gray, though color options may vary by distributor and region.
12. Packaging:
    • Flexible 600 ml pouch, which is convenient for continuous application and larger surfaces.

Compliance and Safety

• Safety Standards: Compliant with European sealing and environmental safety standards.
• ISO Standards: Tested and compliant with ISO 11600 F 25 LM standards (sealant classification).

The SikaFlex Construction Purform is a high-performance sealant suitable for construction joints in demanding environments, offering excellent resistance to structural movement, climate variations, and outdoor exposure.