3M™ Polyurethane Construction Sealant 525

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Multi-purpose bonding and long lasting seals

Permanently elastic to allow joint movement

Creates flexible seals on expansion joints

Container Size (Imperial)

Container Size (Metric)

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Details

Highlights

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.

cartridge, sausage pack and bulk formats

Available in cartridge, sausage pack and in bulk format

Creates Flexible Seals on Expansion Joints
3M™ Polyurethane Construction Sealant 525 (PDF, 371.52 Kb) 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

3M Manual Applicator

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.

Choose a 3M Pneumatic Applicator for ergonomic applications

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.

Click here for more information on 3M™ Adhesive Sealants. (PDF, 797.43 Kb)

Typical properties

Details

Adhesive Type	Polyurethane
Application Method	Hand or pressure caulk
Brands	3M™
Case Quantity	12.0 Bags per Case
Container Size (Imperial)	20.288 fl oz (US), 50 Gal. (US)
Container Size (Metric)	310 ml, 600 ml
Full Cure Time	>3 mm/24 hr
Hardness	25 Shore A
Industries	Construction, General Industrial
Modulus at 100%	75 Pound-Force Per Square Inch
Permeability	Permeable
Physical Form	Medium paste
Product Color	Gray
Product Form	Sausage, Gallon, Cartridge
Product Type	Flashing Accessory
Solids Weight Percent (Approximate)	90 %
Tack-free Time	90 min
Tensile Strength (Imperial)	400 psi
Units per Case	1.0, 12.0
Volume (Imperial)	50 fl oz

Resources

3M™ Adhesive Sealant Brochure

Brochures

(PDF, 18MB)

3M™ Industrial Adhesives and Tapes

Brochures

(PDF, 25MB)

3M™ Signature Products Building and Construction Industry

Brochures

(PDF, 1MB)

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For industrial/occupational use only. Not for consumer sale or use.

3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use. Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice. Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage. For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.