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Item #:
75450051
Sika 10.3 oz Cartridge Sikaflex 521UV UV Resistant LM Polyurethane Sealant, White
Item #:
75450051
RWF 82730
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Imported from USA store
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Order now and get it around Monday, July 27
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Sikaflex-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.
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Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
UV Resistance
Designed to withstand sunlight exposure, ensuring durability and longevity of seals, making it ideal for outdoor applications.
Versatile Application
Suitable for various surfaces including wood, metal, and concrete, providing flexibility in diverse sealing projects.
High Quality
This LM polyurethane sealant offers excellent adhesion and elasticity, ensuring superior performance and reliable protection against weather elements.
Product Details
- Sikaflex-521 UV is a UV resistant, non-sag, elastic, one-part silane-terminated polymer sealant
- Solvent and isocyanate free with very low VOC/solvent free, silicone and PVC-free
- Features high electrical resistance and is resistant to aging and weathering
- Comes in a white color, with a capacity of 10.3 oz and weighs 1 lb
- California Proposition 65 warning: contains chemicals known to cause cancer and reproductive harm
| Industrial sealant type | UV Resistant LM Polyurethane Sealant |
| Recommended surface | Metal |
| Brand | Sika |
| Color | White |
| Material | Polyurethane |
| Weight | 1 lbs (450 grams) |
| Size | 10.3 oz |
| Has written warranty | No |
Who Should Buy?
-
Outdoor Projects
Ideal for sealing applications exposed to UV light and extreme weather, ensuring durability and longevity.
-
Marine Use
Perfect for boats and watercraft needing a strong, waterproof seal that resists sunlight damage.
-
Construction Professionals
Great choice for contractors looking for a reliable sealant for joints and seams in building materials.
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Indoor Only
Not suitable for indoor applications that don't require UV resistance, where typical adhesives may suffice.
Product Description
Sika 10.3 oz Cartridge Sikaflex 521UV UV Resistant LM Polyurethane Sealant, White
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Customer Questions & Answers
-
Question:
Is this sealant suitable for outdoor use?
Answer: Yes, it is UV resistant and resistant to aging and weathering, making it ideal for outdoor applications. -
Question:
Does the sealant have any harmful chemicals?
Answer: No, it is solvent and isocyanate free, providing safety during application. -
Question:
Can it be used for electrical applications?
Answer: Yes, it has high electrical resistance, making it suitable for electrical purposes.
Sika Sealants Editorial Review
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“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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“Accurate delivery timing given”
16 June 2026 · via Trustpilot
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“Not madly expensive like I thought, and much quicker than promised.”
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6/7/2026 · via Trustpilot
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Kwame
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“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
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RWF 82730
Order now and get it around Monday, July 27
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Features & Benefits
- UV resistant sealant
- Non-sag and elastic
- Solvent and isocyanate free
- High electrical resistance
- Resistant to aging and weathering
- 10.3 oz white cartridge
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