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3M™ Polyurethane Construction Sealant 525

  • Multi-purpose bonding and long lasting seals
  • Permanently elastic to allow joint movement
  • Creates flexible seals on expansion joints
  • Skin time in 90-150 minutes; paintable once skin forms
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  • Multi-purpose bonding and long lasting seals
  • Permanently elastic to allow joint movement
  • Creates flexible seals on expansion joints
  • Skin time in 90-150 minutes; paintable once skin forms

3M™ Polyurethane Construction Sealant 525 is a single-component, moisture-curing, gap-filling elastomeric sealant that creates permanently elastic seals and bonds well to concrete. Skin time in 90-150 minutes.

Creates Flexible Seals on Expansion Joints 3M™ Polyurethane Construction Sealant 525 is a single-component, moisture-curing polyurethane sealant used to seal construction expansion joints. It can seal a wide variety of materials, including plastics, fiberglass reinforced plastic (FRP), sheet molding compound (SMC), aluminum, steel, coated metal and wood. It creates a strong, permanent elastic bond with elongation of over 800%. It will seal a wide selection of materials, including concrete, wood, PVC and metal. This adhesive will perform in temperatures ranging from -22°F/-40°C to 176°F/80°C. Once skin has formed, this sealant can be painted to improve the final finish. Available in cartridges, sausage packs and bulk format to meet your application needs. Recommended Applications Sealing expansion joints Understanding Polyurethane Sealants Polyurethane sealants provide strong, flexible durable elastomeric bonds that seal against the elements. These sealants excel in challenging industrial, transportation and construction applications. Polyurethane sealants are available in a wide variety of Shore A hardness, open time and colors to meet many application needs. Choose a 3M Manual or Pneumatic Applicator for dispensing 3M adhesives sealant cartridges and 400ml/600ml sausage packs. Bringing Better Ideas to the Surface through Science and Innovation In our 3M Industrial Adhesives and Tapes Division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.

Specifications
Adhesive Type
Polyurethane
Application Method
Hand or pressure caulk
Applications
Air Barrier
Brand
3M™
Full Cure
>3 mm/24 hr
Hardness
25 Shore A
Industries
Construction, General Industrial
Modulus at 100%
75 Pound-Force Per Square Inch
Physical Form
Medium paste
Product Form
Cartridge, Gallon, Package
Solids Weight Percent (Approximate)
90 Percent
Tack Free Time
90 Minute
Volume (metric)
600 Millilitre
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