3M Polyurethane Construction Sealant 525, Gray, 310 mL Cartridge, 12/Case

• Creates flexible seals on expansion joints
• Multi-purpose bonding and long lasting seals
• Permanently elastic to allow joint movement
• 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.

3M Polyurethane Sealant Model

The 3M Polyurethane Construction Sealant 525 is designed for reliable sealing in construction projects. This gray sealant comes in a 310 mL cartridge, offering a convenient size for various applications.

Its single-component, moisture-curing formula ensures a strong, elastic bond that adapts to joint movement. The model 525 is well-suited for sealing expansion joints and bonding multiple materials effectively.

Flexible Seals For Expansion

This sealant creates flexible seals on expansion joints, which is essential for structures that experience movement. The elasticity allows elongation over 800%, maintaining a durable seal despite temperature changes.

It bonds well to materials like concrete, wood, PVC, and metal, making it versatile for construction needs. The gray color blends well with many surfaces, enhancing the finished look.

Cartridge Format For Ease

Available in a 310 mL cartridge, this sealant is easy to apply with manual or pneumatic applicators. The cartridge format supports precise dispensing, reducing waste and improving efficiency on the job.

Besides cartridges, the product is also offered in sausage packs and bulk formats, allowing you to choose the best packaging for your project size and application method.

Paintable Sealant After Skin

Once the sealant forms a skin, typically within 90 to 150 minutes, it becomes paintable. This feature helps achieve a clean, finished appearance that matches surrounding surfaces.

The ability to paint over the sealant adds aesthetic value and allows for customization in various construction and repair projects, enhancing the overall look.

Pack Size Supports Projects

This product is sold in cases of 12 cartridges, making it suitable for larger projects or multiple jobs. Having a full case ensures you have enough sealant on hand to complete your work without interruption.

The pack count also helps with inventory management and cost planning, providing a consistent supply of the 3M Polyurethane Construction Sealant 525 in gray.