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Sika Sikaflex-221 - Aluminum Gray - Multi-Purpose Polyurethane sealant/Adhesive - Creates Permanent Elastic Seal - Sandable/paintable - Non-Corrosive - 10.1 fl. Oz (Pack of 24)
VERSATILITY AND QUALITY IN ONE - Sometimes simply called Sika 221 black, this one-component urethane caulk bonds to a range of substrates, including metals, plastics, and metal primers and coatings
Sika Sikaflex-221 - Aluminum Gray - Multi-Purpose Polyurethane sealant/Adhesive - Creates Permanent Elastic Seal - Sandable/paintable - Non-Corrosive - 10.1 fl. Oz (Pack of 24)
Item #: 34022634

Sika Sikaflex-221 - Aluminum Gray - Multi-Purpose Polyurethane sealant/Adhesive - Creates Permanent Elastic Seal - Sandable/paintable - Non-Corrosive

Item #: 34022634

SGD 387

Price Details

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*All items will import from US

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VERSATILITY AND QUALITY IN ONE - Sometimes simply called Sika 221 black, this one-component urethane caulk bonds to a range of substrates, including metals, plastics, and metal primers and coatings
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What Stands Out

Permanent Elastic Seal
Sika Sikaflex-221 offers a durable, permanent seal that allows for flexibility, ideal for various applications including construction and automotive, ensuring long-lasting performance under different conditions.
Sandable & Paintable
This sealant is easily sandable and paintable, allowing for seamless finishing. Users can achieve a professional look without compromising the integrity of the sealant.
Non-Corrosive Formula
The non-corrosive nature of Sikaflex-221 ensures compatibility with most materials, reducing the risk of damage and making it suitable for a wide range of applications in various environments.

Product Details

Shop Sika Sikaflex-221 - Aluminum Gray - Multi-Purpose Polyurethane sealant/Adhesive - Creates Permanent Elastic Seal - Sandable/paintable - Non-Corrosive - 10.1 fl. Oz (Pack of 24) online at a best price in Singapore. B094G4WQVH
Item Weight24 lbs (10.89 kg)

Dangerous Goods

To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.

Who Should Buy?

Suitable For
  • Home Repair Enthusiasts

    Ideal for DIY projects requiring a dependable, flexible seal for various materials like wood and metal.

  • Professional Contractors

    A go-to adhesive for construction and remodeling projects, providing lasting adhesion and elasticity for demanding applications.

  • Automotive Applications

    Suitable for bonding and sealing in automotive settings, ensuring protection against vibrations and moisture.

Not Suitable For
  • Cold Weather Use

    Not ideal for applications in extreme cold temperatures, as it may affect cure time and bonding.

  • Non-Porous Surfaces

    Not suitable for non-porous surfaces like glass or certain plastics where a strong hold may not occur.

  • Large Gaps

    Not recommended for filling large gaps, as its purpose is to create a seal rather than act as a filler.

Product Description

Sika Sikaflex-221 - Aluminum Gray - Multi-Purpose Polyurethane sealant/Adhesive - Creates Permanent Elastic Seal - Sandable/paintable - Non-Corrosive - 10.1 fl. Oz (Pack of 24)

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is SIKA Sikaflex-221 used for?

    Answer: SIKA Sikaflex-221 is a versatile polyurethane sealant and adhesive suitable for a variety of applications, including construction, automotive repairs, and general household projects. Its permanent elastic seal provides strong adhesion, making it ideal for sealing joints and gaps where flexibility is needed, such as in windows, doors, and roofs. This product is also NSF approved for drinking water applications, ensuring its safety for plumbing repairs.
  • Question: Is SIKA Sikaflex-221 paintable?

    Answer: Yes, SIKA Sikaflex-221 is paintable once fully cured. This gives you the flexibility to match the sealant to your project's color scheme. For optimal results, it is advised to wait at least 24 hours after application before painting. This allows the sealant to properly cure and ensures that the paint adheres effectively, providing a seamless blend with your surfaces.
  • Question: Can SIKA Sikaflex-221 be used outdoors?

    Answer: Absolutely, SIKA Sikaflex-221 is suitable for both indoor and outdoor use. Its excellent weather resistance makes it perfect for exterior projects, such as sealing gaps on roofs, patios, or around windows. The permanent elastic nature of the sealant helps it withstand various environmental conditions, ensuring long-lasting performance in outdoor applications.
  • Question: What surfaces can SIKA Sikaflex-221 bond to?

    Answer: SIKA Sikaflex-221 adheres well to many surfaces, including wood, concrete, metals, and various plastics. This wide range of compatibility makes it an ideal choice for structural bonding applications, renovations, and repairs. Always clean the surfaces thoroughly before application to achieve the best adhesion, ensuring a durable and reliable seal.
  • Question: Is SIKA Sikaflex-221 suitable for underwater applications?

    Answer: While SIKA Sikaflex-221 is NSF approved for drinking water systems, it is not recommended for continuous underwater applications, like swimming pools. It's designed for sealing waterlines and plumbing joints effectively. For underwater applications, choose a product specifically formulated to withstand prolonged exposure to water for optimal performance.
  • Question: How do you apply SIKA Sikaflex-221?

    Answer: Applying SIKA Sikaflex-221 is straightforward. Ensure the surfaces are clean and dry before using a caulking gun to dispense the sealant. Apply it evenly into joints or gaps, then smooth the surface with a tool or your finger for a neat finish. For best results, refer to the manufacturer's instructions for specifics on curing times and environmental conditions.
  • Question: What is the curing time for SIKA Sikaflex-221?

    Answer: The curing time for SIKA Sikaflex-221 varies depending on temperature and humidity, typically ranging from 24 to 48 hours for full cure. However, it may be touch-dry within the first couple of hours. Factors such as joint size, environmental conditions, and substrate type can influence curing times, so it's important to factor this into your project timeline.
  • Question: Can SIKA Sikaflex-221 be used in high-temperature environments?

    Answer: Yes, SIKA Sikaflex-221 is designed to withstand a wide range of temperatures once cured, making it suitable for various environmental conditions. However, always check the manufacturer's guidelines for any specific limitations regarding extreme temperatures to ensure you achieve the best results for your application.
  • Question: Where can I buy SIKA Sikaflex-221, Black, Multi-Purpose Polyurethane Sealant & Adhesive?

    Answer: You can purchase SIKA Sikaflex-221 in Singapore through Ubuy, which offers a convenient option to order and have it delivered to your location. Ubuy provides a reliable purchasing experience with a variety of product selections so you can find the right sealing solution for your project.
  • Question: Is SIKA Sikaflex-221 resistant to chemicals?

    Answer: Yes, SIKA Sikaflex-221 has good resistance to many chemicals, making it suitable for industrial and commercial applications. It can withstand exposure to water, various oils, and many solvents without degrading. This feature makes it an ideal choice for constructing or repairing surfaces in environments where chemical exposure might occur.

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