- Multi-purpose bonding and long lasting seals
- Permanently elastic to allow joint movement
- 60-90 skin time; paintable, once skin forms
- Good UV resistance
- One component, moisture-curing sealant simplifies production
- Bonds dissimilar materials for increased design flexibility
- Gap filling capability
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.
