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Item #:
243750245
Sikaflex 521, White, UV Resistant Low Modulus Sealant, 300ml Cartridge
Item #:
243750245
XAF 22830
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
7%
In stock
Imported from USA store
QTY:
Only 12 items left in stock.
Order now and get it around Tuesday, September 01
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Sikaflex-521 UV: a durable, UV resistant sealant that bonds well to a variety of substrates without special pre-treatment.
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What Stands Out
UV Resistance
Sikaflex 521 is designed to withstand UV exposure, ensuring long-lasting performance and protection against fading, making it ideal for outdoor applications.
Low Modulus
The low modulus formulation allows for superior elasticity, accommodating building movements without cracking, ensuring durability and reliability in a variety of environmental conditions.
Versatile Applications
Suitable for diverse substrates including wood, metal, and concrete, Sikaflex 521 effectively meets various sealing needs, providing flexibility in usage for both professionals and DIY enthusiasts.
Product Details
| Brand Name | SIKA |
| Number of Packs | 1 |
| Unit Count | 10.1 Fluid Ounces |
| Global Trade Identification Number | 07612894448689 |
| Number of Items | 1 |
| Item Type Name | Great Product |
| Manufacturer | Sika |
| Model | SIKA-106096 |
| Part Number | 106096 |
| Item Weight | 16 ounces (453.6 grams) |
| Item Dimensions | 2 x 2 x 14 inches (5.1 x 5.1 x 35.6 cm) |
| Water Resistance Level | Waterproof |
| Item Form | Liquid |
| Compatible Material | Wood, Metals, Sheet Steels, Metal Primers, Paint Coatings, Ceramic Materials, Plastics and Glass |
| Style Name | Compact |
| Color | White |
| Material Type | Polyurethane |
| Material | Polyurethane |
| Brand | SIKA |
| Style | Compact |
| Item dimensions L x W x H | 2 x 2 x 14 inches (5.1 x 5.1 x 35.6 cm) |
Who Should Buy?
-
Marine Applications
Ideal for sealing joints in boats and marine equipment due to its UV resistance and flexibility.
-
Construction Projects
Perfect for use in construction for sealing windows, doors, and other joints where waterproofing is essential.
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DIY Enthusiasts
Great for hobbyists and DIYers looking for a reliable sealant for various home improvement projects.
-
High-Pressure Environments
Not suitable for applications where high pressure or extreme movement is expected, as flexibility may be insufficient.
Product Description
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Customer Questions & Answers
-
Question:
Is Sikaflex-521 UV suitable for outdoor use?
Answer: Yes, Sikaflex-521 UV is UV resistant and designed for outdoor applications. -
Question:
Can Sikaflex-521 UV be used on wet surfaces?
Answer: Sikaflex-521 UV cures upon exposure to moisture, making it ideal for various conditions. -
Question:
Is the product safe to use indoors?
Answer: Yes, it is solvent and isocyanate free, making it safe for indoor use with low odor.
SIKA Joint Sealants Editorial Review
Sikaflex 521, White, UV Resistant Low Modulus Sealant, 300ml Cartridge is an outstanding product for various sealing applications, praised for its strong adhesion and waterproof properties. Users highlight its effectiveness in sealing around solar panels and yachts, providing lasting protection even under challenging conditions. The product is compatible with a wide range of materials, including wood and metals, making it versatile for numerous projects. A note of caution from users suggests ensuring a caulk gun is on hand for easier application, as it can be tricky to use without one. Overall, this sealant stands out for its reliability and performance.
Customer Reviews & Ratings
18 customers ratings
-
5 Star
52%
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4 Star
10%
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3 Star
7%
-
2 Star
15%
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1 Star
16%
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Pros
- Excellent adhesion on various surfaces.
- Waterproof and UV resistant features.
- Ideal for sealing solar panels and RVs.
- High compatibility with multiple materials.
- consistent performance under significant rainfall.
Cons
- Best before date awareness is essential.
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
K
kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
SJ
SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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XAF 22830
Order now and get it around Tuesday, September 01
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.)
QTY:
Only 12 items left in stock.
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PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
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Fastest cross-border delivery
Features & Benefits
- Multi-purpose, UV resistant sealant for diverse applications.
- Forms a durable and elastic bond on exposure to moisture.
- Solvent and isocyanate free, ensuring safety and low odor.
- High electrical resistance and very low VOC content.
- Resistant to aging and weathering, ensuring long-lasting performance.
- Compatible with a wide range of substrates without special pre-treatment.
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