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

not compatible with asphalt roof systems

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

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

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

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🚛 Seal like a pro, last like a legend!

HEAVY DUTY DURABILITY - Polyurethane formula ensures robust, flexible seals on trucks, trailers, and specialty vehicles.
PRECISION APPLICATION - 10.5oz cartridge designed for controlled, mess-free sealing.
TRUSTED BRAND QUALITY - 3M reliability guarantees professional-grade bonding and sealing every time.
VERSATILE INDUSTRIAL USE - Ideal for lap seams on trucks, trains, RVs, and construction panels.
WEATHER RESISTANT PERFORMANCE - Maintains integrity under harsh industrial and outdoor conditions.

3M Polyurethane Sealant 540 Gray is a 10.5oz industrial-grade cartridge designed for sealing lap seams on trucks, trailers, specialty vehicles, and construction panels. Its durable polyurethane formula provides a flexible, weather-resistant bond trusted by professionals for heavy-duty applications.

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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.

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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.

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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.

€ 106.56

Duties & taxes incl.

Slovakiastore

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Received my product in pristine condition. Great service overall.

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Manufacturer	3M
Part Number	41594
Product Dimensions	21.3 x 16.5 x 16.5 cm; 399 g
Item model number	41594
Size	10.5 Ounces
Colour	Gray
Style	Industrial
Material	Polyurethane
Item Package Quantity	1
Batteries included?	No
Batteries Required?	No
Item Weight	399 g

3m Polyurethane Sealant 540 Gray, 10.5oz Cartridge by 3M

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