Desertcart Logo

Q: Can this be use for sealing under/around solar panel mounting roof brackets?

not compatible with asphalt roof systems

Q: So this will work with a standard caulk gun. Does it come with a screw on tip?

yes, a standard gun will work just fine. the caulking is stiff like most polyurethanes. Yes, it does have a screw top

Q: can this be applied with a regular caulking gun?

Yes, pull the tamper seal from the back and there is a standard caulking gun plunger behind the seal

Q: Is this color/shade of gray dark, say 75% to 80+% of black? Or, is it considerably lighter than that in color/percentage of black?

Much lighter than black and dries clear

Deliver to Greece

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

🔒 Seal the Deal with 3M's Ultimate Flexibility!

DESIGN FREEDOM - Bonds dissimilar materials, unlocking endless design possibilities.
SEAL WITH CONFIDENCE - Experience permanent elasticity for dynamic joint movement.
WEATHER THE ELEMENTS - Enjoy superior UV resistance for long-lasting durability.
SIMPLIFIED APPLICATION - One-component, moisture-curing formula for hassle-free use.
SPEED MEETS VERSATILITY - Achieve a skin time of 60-90 minutes—paintable once set!

The 3M Polyurethane Sealant 540 is a high-performance, moisture-curing sealant designed for multi-purpose bonding and long-lasting seals. With a skin time of 60-90 minutes and excellent UV resistance, it simplifies production while allowing for joint movement and bonding of dissimilar materials.

Have a Question? See What Others Asked

Can this be use for sealing under/around solar panel mounting roof brackets?

So this will work with a standard caulk gun. Does it come with a screw on tip?

can this be applied with a regular caulking gun?

Is this color/shade of gray dark, say 75% to 80+% of black? Or, is it considerably lighter than that in color/percentage of black?

Common Questions

Are the products genuine and authentic?+

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.

How long does delivery take and is it reliable?+

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.

What is Desertcart? Is it safe to order from?+

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

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products