Is this compatible with Icf blocks? (Polystyrene)

Yes, ICF is one of the things I used it on

3M 540 (Gray) Marine Grade 20-oz Polyurethane Sealant Adhesive 600mL Sausage Pack (CASE of 12 Each)

3M 540 (Gray) Marine Grade 20-oz Polyurethane Sealant Adhesive 600mL Sausage Pack (CASE of 12 Each)

Product ID: 41927701

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Details

Brand
Industrial 3M
Full Cure Time
24 Hours
Initial Hardening Time
60 Minutes
Item Weight
0.01 Ounces
Liquid Volume
600

💧Waterproof & submersible

🔗Bonds 10+ materials

⏱️90 min tack-free speed

Description

🔧 Seal it fast, seal it strong—your project’s waterproof MVP!

FAST TRACK SEAL PAINT - Tack-free in just 60 minutes, paint-ready for seamless project flow.
MARINE GRADE DURABILITY - Certified waterproof and submersible after full cure—built to brave the elements.
UNIVERSAL BONDING POWER - Adheres strongly to plastics, metals, masonry, wood, and more for versatile applications.
ELASTIC STRENGTH WITH FLEX - ±25% joint movement capability ensures lasting flexibility without cracking.
COST EFFECTIVE HIGH PERFORMANCE - Comparable to premium 3M 5200 but at half the price—smart savings, no compromise.

3M 540 Marine Grade Polyurethane Sealant is a fast-curing, one-component adhesive designed for demanding construction and marine applications. It forms a permanent elastic bond to a wide range of materials including metals, plastics, and masonry. With a 90-minute skin time and full waterproof cure within 24-48 hours, it supports submerged use and ±25% joint movement. This 600mL sausage pack (case of 12) offers professional-grade durability and versatility at a competitive price point.

Specifications

ASIN	B071R6D9HM
Best Sellers Rank	#517,213 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #213 in Polyurethane Adhesives #484 in Urethane Adhesives
Brand Name	Industrial 3M Sealants
Customer Reviews	5.0 5.0 out of 5 stars (1)
Full Cure Time	24 Hours
Included Components	Item
Initial Hardening Time	60 Minutes
Item Form	Paste
Item Weight	0.01 Ounces
Liquid Volume	600 Milliliters
Manufacturer	Scotch Seal
Surface Recommendation	Miscellaneous
Tensile Strength	250 Pounds Per Square Inch
UPC	700287223535
Unit Count	12.0 Count
Water Resistance Level	Waterproof

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