SikaFlex 521 UV, White, Polyurethane Hybrid Multi-Purpose Sealant, Adhesive Sealant for Sealing and Elastic Joints, Weatherproof, 300 ml
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SikaFlex 521 UV, White, Polyurethane Hybrid Multi-Purpose Sealant, Adhesive Sealant for Sealing and Elastic Joints, Weatherproof, 300 ml

4.6/5
Product ID: 48284394
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Details

  • Colour
    WeiĂź
  • Brand
    Sika
  • Item weight
    0.42 Kilograms
  • Liquid volume
    300
  • Full cure time
    3E+1 Minutes
⚡High electrical resistance
🌦️Weatherproof & UV resistant
🛠️Multi-surface adhesion

Description

🛡️ Seal smart, seal strong — the pro’s choice for flawless finishes!

  • CUSTOM FINISH READY - Paintable and sandable to match your design vision perfectly.
  • ECO FRIENDLY FORMULA - Solvent, silicone, and PVC-free for a cleaner, safer application.
  • ULTIMATE WEATHERPROOFING - Stay worry-free with a sealant that resists aging and harsh weather conditions.
  • VERSATILE SURFACE BONDING - Seamlessly adheres to wood, metals, ceramics, plastics, and more for all your projects.
  • PROFESSIONAL GRADE ELASTICITY - Flexible yet durable sealant trusted by experts for lasting joints.

Sika Flex 521 UV is a 300 ml white polyurethane hybrid sealant designed for multi-purpose use. It offers superior weather and UV resistance, adheres to a wide range of materials including wood, metals, ceramics, and plastics, and features high elasticity and electrical resistance. Solvent, silicone, and PVC-free, it can be painted and sanded, making it ideal for professional-grade sealing and bonding applications.

Specifications

ManufacturerSika
BrandSika
ModelSikaflex-521 UV (Alt)
Product Dimensions4.9 x 4.9 x 22.5 cm; 420 g
Item model number54864
Manufacturer part number54864
Special FeaturesBIANCO
Item Weight420 g

Have a Question? See What Others Asked

Can this be over sprayed with a clear lacquer to protect from discolouration or would the lacquer just peel off in time?
can it be smoothed with soap water?

Reviews

4.6

All from verified purchases

M**L

Needed it fast.

Needed this specific product for a client task. As always the main criteria was getting the item quick as this was a urgent task.Delivery was quick and well packaged. The product worked well but as this product was a requirement by the customer I don't think it's fair to compare it to other products. It has remained flexible and provided a weatherproof seal on the component.

K**N

Brilliant stuff very strong joint.

Easy to use, full size solar panel fitted to the caravan glued in 6 positions very strong joints fitted Saturday morning could not move it Sunday morning, no holes required in the caravan roof.

M**T

Solar panals glue

Great stuff used to glue solar panals on my van

L**N

Best sealant on the market

Use this before on our caravan would highly recommend

G**N

Sikaflex

Perfect for the job putting solar on campervan roof

S**E

Good sealant for motorhome, and general outdoor settings

Great sealant for motorhome

P**P

keep out the damp

Not tried this batch but last lot very good

A**R

Yes

Excellent

Common Questions

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TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Sikaflex 521 Uv White Polyurethane Hybrid Multi Purpose Sealant Adhesive | Desertcart KUWAIT