1. All 3M Products

3M™ Polyurethane Adhesive Sealant 551

Part Number 628043M ID 625268393113M Product Number 551UPC 00048011628042
  • 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
 More...
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.

3M™ Polyurethane Adhesive Sealant 551 offers an alternative to mechanical fasteners and can replace rivets in some applications.
3M Manual Applicator designed for smaller operations
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.

Polyurethane sealants provide strong, flexible durable elastomeric bonds that seal against the elements.
Choose a 3M Pneumatic Applicator for ergonomic applications
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.

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

Customer Reviews
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 99ms
  • REVIEWS, PRODUCT
  • bvseo-msg: The resource to the URL or file is currently unavailable.;
Large Volume Order

If you are considering a large purchase of this or other 3M Industrial Adhesives and Tape products, our inside sales team is ready to help by providing additional information and options. Our technical expertise, customer support, and global capabilities put us in a unique position to address your biggest challenges, and we'll do our best to prove that we should be your supplier of choice.


All fields are required unless indicated optional

  • 3M takes your privacy seriously. 3M and its authorized third parties will use the information you provided in accordance with our Privacy Policy to send you communications which may include promotions, product information and service offers.

    Please be aware that this information (including the original and the subsequent reply) may be transferred to a server located in the U.S. for metrics and storage. If you do not consent to this use of your personal information, please do not use this system.

  • Submit