At 3M, we discover and innovate in nearly every industry to help solve problems around the world.
Multi-purpose bonding and long lasting seals
Permanently elastic to allow joint movement
60-90 skin time; paintable, once skin forms
3M™ Polyurethane Sealant 540 is an all-purpose, single-component, moisture-curing, gap-filling polyurethane that creates permanently elastic seals and bonds in a wide variety of service environments.