3M Polyurethane Sealant 540, Gray, 310 mL Cartridge

3M Polyurethane Sealant 540, Gray, 310 mL Cartridge

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

Product ID: 81722941

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Details

Color
Gray
Brand
3M
Liquid Volume
10.5 Fluid
Full Cure Time
9E+1 Minutes
Item Form
Liquid

⏳60-90 skin time

🔧Multi-purpose bonding

☀️Good UV resistance

Frequently Bought Together

3M Polyurethane Sealant 540, Gray, 310 mL Cartridge

3M Polyurethane Sealant 540, Net 10.5 Fluid Ounce Cartridge, Gray (Pack of 12)

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?

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