Sika
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Sika Sikaflex® 521UV UV Resistant LM Polyurethane Sealant - 10.3oz(300ml) Cartridge - White
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Sika Sikaflex® 521UV UV Resistant LM Polyurethane Sealant - 10.3oz(300ml) Cartridge - White
Sikaflex®-521 UV bonds well to a wide variety of substrates without the need for special pre-treatment, forming a durable elastomer that's perfect for permanent, high strength elastic seals.
Sika Sikaflex® 521UV UV Resistant LM Polyurethane Sealant - 10.3oz(300ml) Cartridge - White
Item #: 75446761

Sika Sikaflex® 521UV UV Resistant LM Polyurethane Sealant - 10.3oz(300ml) Cartridge - White

Item #: 75446761
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Sikaflex®-521 UV bonds well to a wide variety of substrates without the need for special pre-treatment, forming a durable elastomer that's perfect for permanent, high strength elastic seals.
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What Stands Out

UV Resistance
Sikaflex® 521UV provides excellent UV resistance, ensuring long-lasting durability and protection against outdoor elements, making it ideal for both residential and commercial applications.
Flexible Sealant
This low-modulus polyurethane sealant allows for significant movement without cracking or breaking, effectively accommodating expansion and contraction in various substrates.
Versatile Application
Designed for various surfaces including metals, wood, and concrete, this sealant offers flexibility in application, meeting diverse project needs and ensuring strong adhesion for a wide range of uses.

Product Details

Shop the Sika Sikaflex® 521UV UV Resistant LM Polyurethane Sealant in White at Ubuy Antigua and Barbuda. Get high-quality sealant for your automotive needs. Shop now!
  • Sikaflex® 521UV UV Resistant LM Polyurethane Sealant - 10.3oz(300ml) Cartridge - WhiteSikaflex®-521 UV is a multi-purpose, UV resistant, non-sag, elastic, one-part silane-terminated polymer sealant, which cures on exposure to atmospheric moisture to form a durable elastomer. Sikaflex-521 UV is solvent and isocyanate free.Uses:Sikaflex®-521 UV bonds well to a wide variety of substrates without the need for special pre-treatment and is suitable for making permanent, high strength elastic seals. Compatible substrate materials include wood, metals, (particularly aluminum including anodized components), sheet steels (including phosphated, chromated and zinc-plated components), metal primers and paint coatings (two-part systems), ceramic materials, plastics and glass.Characteristics & Advantages:Very low VOC/solvent freeSilicone and PVC-freeIsocyanate-freeHigh electrical resistanceResistant to aging and weatheringWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
Industrial sealant typeUV Resistant LM Polyurethane Sealant
BrandSika
ColorWhite
MaterialPolyurethane
Weight1 lb (450 grams)
Size10.3oz(300ml)
Pieces1
Has written warrantyNo

Who Should Buy?

Suitable For
  • Exterior Applications

    Ideal for sealing gaps and joints in outdoor settings due to its UV resistance and durability.

  • Professional Contractors

    Perfect for contractors needing a reliable, high-performance sealant for construction or remodeling projects.

  • Marine Use

    Suitable for marine environments where water resistance and flexibility are essential for joints and seals.

Not Suitable For
  • Indoor Use Only

    Not the best choice for indoor applications where lower VOC or odor-free products are preferred.

Product Description

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Customer Questions & Answers

  • Question: Is Sikaflex®-521 UV suitable for outdoor use?

    Answer: Yes, it is UV resistant and ideal for outdoor applications.
  • Question: Can I use this sealant on metal surfaces?

    Answer: Absolutely, it bonds well to metals including aluminum and plated components.
  • Question: What substrates can I use Sikaflex®-521 UV with?

    Answer: It is compatible with wood, metals, ceramics, plastics, and glass.

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Features & Benefits

  • Multi-purpose sealant with UV resistance.
  • Elastic, non-sag, and easy to apply.
  • Bonds well to various substrates without pre-treatment.
  • Solvent, isocyanate, silicone, and PVC-free.
  • Forms a durable elastomer upon curing.
  • Low VOC, resistant to aging and weathering.

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