3M™ Polyurethane Construction Sealant 525

3M™ Polyurethane Construction Sealant 525 is a single component polyurethane elastomeric sealant which cures under the effect of atmospheric humidity to form a flexible and resilient joint with very good adhesion on most materials. Elongation of over 600%, Shore A of 25, skin time of 2 hrs.

525 can be used for heavy and light precast panel expansion joints, wood, aluminium and PVC joinery seams, and expansion joints in traditional construction. 525 can be used for clay and concrete roof tiles.