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3M™ Polyurethane Adhesive Sealant 551

3M ID 62526839311
  • Long open time for positioning parts
  • Broader adhesion to a variety of substrates, with less need for primers
  • Advanced chemistries resist cracking, yellowing, chalking and UV degradation
  • Lasting sealant provides excellent color stability
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Details
  • Long open time for positioning parts
  • Broader adhesion to a variety of substrates, with less need for primers
  • Advanced chemistries resist cracking, yellowing, chalking and UV degradation
  • Lasting sealant provides excellent color stability

3M™ Polyurethane Adhesive Sealant 551 is a white, one component, medium strength polyurethane adhesive sealant that is designed for sealing and bonding of many applications that include marine and specialty vehicle markets. Our moisture curing adhesive sealant forms a permanent elastic bond on a wide variety of materials including plastics, metals, fiberglass, and wood.

Longer Open Time for Positioning Parts Designed for more complex applications requiring time for complex alignment, 3M™ Polyurethane Adhesive Sealant 551 provides excellent adhesion to concrete, wood, aluminum, most lacquered metals, polyester, glass, and stone. Our versatile formula is good for both above and below the waterline in marine applications and bonding aluminum, FRP, metal, plastic, SMC, steel and wood. Recommended Applications Cosmetic skinning on boats, buses, trailers Bonding high-performance applications, such as marine windshields Waterproofing joints without primers in concrete, glass, marble, granite and brick Bonding and waterproofing modular building panels or bathroom units Paintable after Skin Forms for Improved Appearance 3M™ Polyurethane Adhesive Sealant 551 offers an alternative to mechanical fasteners and can replace rivets in some applications. It will bond dissimilar substrates and a wide selection of materials. This adhesive will perform in temperatures ranging from -40°F/-40°C to 194°F/90°C. Once skin forms (60-90 minutes), the sealant can be painted to improve the final finish. 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
Brand
3M™
Full Cure
>4 mm/24 hr
Hardness
45 Shore A
Industries
Construction, General Industrial, Transportation
Modulus at 100%
87 Pound-Force Per Square Inch
Physical Form
Medium paste
Product Form
Package
Solids Weight Percent (Approximate)
90 Percent
Tack Free Time
3 Hour
Volume (metric)
600 mL
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