Works on a Wide Variety of Similar and Dissimilar Substrates
3M™ Polyurethane Adhesive Sealant 550 Fast Cure is part of our 500 Series one-component, moisture-curing, urethane adhesives. These adhesives create a permanently elastic bond and bond strongly a variety of substrates such as wood, fiber reinforced plastic (FRP) and many other plastics to themselves, to metal and to glass. Our moisture-curing formula cures by reacting with moisture in the air or the substrate. In addition to spraying, they can also be extruded from hand held or bench mounted applicators and are primarily dispensed with bulk application equipment_. Our one-part polyurethane adhesives work well for bonding a wide variety of plastics including polystyrene and polyacrylic. They are also effective on a wide variety of other substrates – from aluminum and glass to plastic and wood.
Recommended Applications
- Marine deck to hull bonding
- Vertical and horizontal expansion joint applications
- Concrete and masonry control joints
- Aluminum curtain wall and storefronts
- Door and window frame perimeters
Paintable after Skin Forms for Improved Appearance
3M™ Polyurethane Adhesive Sealant 550 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.

3M 14211, Roloc Disc Pad TS and TSM, Medium 2 in 1/4-20 Internal, 7000045283
3M Super Abrasives Roloc Disc, 2" Type-R, Medium AO High Strength, Box of 50
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
Dynabrade 90339 3-1/2" W x 15-1/2" L 320 Grit A/O DynaCut Belt, 10/pack
Dynabrade 96101 Dynabrade Air Lube 10W/NR 24 Per Box
3M 26597, Cloth Belt 341D, P320 X-weight, 1 in x 42 in, Film-lok, Single-flex, 7010294511, 200 per case
Dynabrade 52624 4" Dia. Right Angle Disc Sander
Dynabrade 98265 3/8" Female Coupler with 3/8" Male Plug Assembly
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
3M 76622, Roloc Disc 777F, 36 YF-weight, TR, 1 in, Die R100N, 7000045618
Standard Abrasives 33345 Surface Conditioning RC Belt 888055, 3/4 in x 18 in MED, 7000121947
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit
Dynabrade 95541 Grease Gun
Dynabrade 15003 Mini-Dynafile II Abrasive Belt Tool 
