ATTENTION CUSTOMERS: The building & construction industry is currently experiencing a worldwide shortage of raw materials due to the COVID-19 pandemic. Manufactures have already begun notifying distributors of these disruptions and shortages in the supply chain and have also implemented immediate price increases. At this time we cannot guarantee all items will be available in stock. If you have a large job coming up make sure to order early so that we can still provide you with the materials needed to complete your jobs. Please allow additional time for your order to arrive, thank you for your patience in this matter.
Sale! 3M 540 Polyurthane Sealant 10-oz Tube
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Conspec Family Business BadgeConspec Warranty BadgeOne-part, fast-skinning, moisture-curing, gun-grade polyurethane sealant.

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3M 540 Polyurethane Sealant

3M Polyurethane Sealant 540 is a high performance, fast curing, one component, moisture curing product which forms a permanent elastic bond to a wide variety of materials including plastics, FRP, SMC, aluminum, masonry, steel, coated metal, and wood. This product is ideally suited for a number of construction applications including; expansion joints, control joints, doors and windows, aluminum curtain walls and storefront glass, as well as precast and tilt-up construction. 3M Polyurethane Sealant 540 is Tack-free in 60 minutes per ASTM C679, features a Joint movement capability of ±25%, and once fully cured is suitable for Submerged waterproof, pool and marine applications. Comparable to 3M 5200 Marine sealant but half the price!  Meets ASTM C-920

• Superior Flexible Bond
• 90 Minute Skin Time
• Smoke and Flame Rated
• Paintable after Tack-Free
• Joint Movement capability 25% +/-
• Bonds to; plastics, FRP, SMC, aluminum, steel, coated metal, and wood
• Use 3M 540 for Sealing, caulking, waterproofing
• Use 3M 540 for Aluminum curtain walls and storefronts
• Use 3M 540 for Doors and windows
• 3M 540 is approved for Submerged and Marine applications

(10-oz Tubes) 3M 540 White 00-021200-49054-5  ,and (10-oz Tubes) 3M 540 Gray are in stock ready to ship

(20-oz Chubs) 3M 540 White 00-021200-56561-8 , (20-oz Chubs) 3M 540 Black 00-021200-96272-1 , and (20-oz Chubs) 3M 540 Gray 00-021200-56562-5 may have 1-2 weeks lead time, please call to check availability.





To view the most recent Technical Data Sheet, please click here.

Weight 20 oz
Dimensions 2 x 2 x 13 in
Product Color

Black, Gray, White

Product Size

10-oz Cartridge

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