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.

3M™ 72016, Remote Alarm & Strobe 529-05-20, Audible, 7000131708, 1 EA/Case
Dynabrade 14360 Pneumatic Pipe Belt Finisher
3M™ 72013, Adapter 529-04-50, 110-120 VAC, 7000131705, 1 EA/Case
3M™ 07010, Supplied Air Respirator Hose W-9435-25/07010(AAD), 25 ft, 3/8 in ID, Industrial Interchange Fittings, High Pressure, 7000005374, 1 EA/Case
Insize 7101-500A, DIGITAL HORIZONTAL SCALE, 20"/500mm, 6928640321641
Dynabrade 11476 Dynabelter Abrasive Belt Tool, Heavy-Duty
Air Turbine Tools 200SV - 1/8" Straight Hand Tool Series with Brake, 50,000 RPM, 32063
Air Turbine Tools 201DM - 1/8" Straight Hand Tool Series with Brake, 40,000 RPM, 32146
3M 92116, Safety-Walk Slip Resistant Reflective Tread, 600BY-T6X24, 6 in x 2 ft, Black, 7100155071
3M 20152, Scotch-Weld Epoxy Adhesive 1838, Green, Part B/A , 1 Quart Kit, 7000046340, 6/case
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Air Turbine Tools 201SV - 3mm Straight Hand Tool Series, 40,000 RPM, 32141
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