Will this adhere well to wood?

This stuff sticks to anything better than any product I've ever used. It will stick to wood really well.

Would this work to attach flexible solar panels to the roof of a cargo van?

Contrary to the other answers, the Sikaflex manufacturer's website indicates that it is also a high strength adhesive: Sikaflex®-221 is a high-quality multi-purpose non-sag 1-c polyurethane sealant/adhesive. Sikaflex®-221 bonds well to a wide variety of substrates and is suitable for making permanent elastic seals of high adhesive strength. Suitable substrate materials are wood, metals, metal primers and paint coatings (2-c systems), ceramic materials and plastics.

would this be great stuff to seal an aluminum enclosed trailer roof?

I am on a horse trailer forum and this was recommended by several people with 60+ years in trailer repair. They swear by it.

Can 221 be used for Aluminum Boat repair below water line?

Not positive but think it can not be used like that

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017-90892 Sikaflex-221, Aluminum Gray

Product ID: 20033231

Details

Brand
AP Products
Color
Aluminum Gray
Item Form
Product
Material
adhesive

💪Permanent elastic adhesion

⏱️Fast curing in minutes

🌧️Weather & moisture resistant

$31.79

Duties & taxes included

In stock

Sold byAmazon British Virgin IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Seal it once, seal it right — the pro’s choice for lasting strength!

FINISH LIKE A PRO - Sandable and paintable for seamless, flawless repairs and upgrades.
WEATHERPROOF WARRIOR - Built to withstand rain, sun, and road abuse without losing grip.
RAPID CURE READY TO ROLL - Get durable, long-lasting seals in record time with fast curing technology.
CERTIFIED SAFE VERSATILE - NSF approved for potable water and incidental food contact—trusted for critical applications.
UNMATCHED ELASTIC STRENGTH - Maintains flexibility and adhesion even under constant vibration and shock.

Sikaflex-221 Aluminum Gray is a top-tier one-component polyurethane sealant and adhesive known worldwide for its fast curing, permanent elastic bonding, and exceptional resistance to weather, moisture, and mechanical stress. Ideal for aluminum surfaces in trucks, RVs, and buses, it offers professional-grade durability, is sandable and paintable, and meets NSF standards for potable water safety.

Specifications

ASIN	B004RCX8XS
Best Sellers Rank	#18,253 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #13 in Polyurethane Adhesives
Brand Name	AP Products
Color	Aluminum Gray
Compatible Material	Aluminum
Container Type	Tube
Customer Reviews	4.5 4.5 out of 5 stars (308)
EU Spare Part Availability Duration	5 years
Included Components	Auto part, Automotive Accessories, Replacement and Performance parts
Item Form	Product
Item Package Quantity	1
Item Type Name	Sikaflex 221 Alum Gray 30
Item Weight	15.2 ounces
Manufacturer	AP Products
Material Type	Polyurethane-based adhesive
Model	1790892
Number of Packs	1
Number of Pieces	1
Other Special Features of the Product	Extra-strong bonding capabilities, Heat Resistant, Moisture Resistant, Durable, Sandable, Paintable, NSF Approved for Food Contact
Part Number	017-90892
UPC	338860051048
Unit Count	10.1 Fluid Ounces
Viscosity Level	Medium
Volume	300 ml
Warranty Description	Manufacturer Warranty
Water Resistance Level	Waterproof

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

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

2 weeks ago

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$31.79

Duties & taxes included

In stock

Sold byAmazon British Virgin IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to British Virgin Islands.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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