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 81920, Hookit Microfinishing Film Disc 268L, 30 Mic, Type D, 5 in x NH, Die 500X, 7000118204, 500 ea/Case
3M 29828, Sanding Screen, 100 Grit, 19 in x NH, 7100160248
Dynabrade 22092 2-3/4" x 17" Hand Sanding Block
3M 21752, Stikit Cloth Disc Roll 341D, 50 X-weight, 5 in x NH, 7010326149
3M™ 17379, Versaflo™ Length Adjusting Breathing Tube BT-30, 7100009685, 1 EA/Case
3M 16204, PPS Disposable Lids, Midi, 200 Micron Full Diameter Filters, 7100169390
3M 35829, Hookit Dust Extraction Flexible Sanding Block Kit, 7100259119
3M 54370, Particulate Respirator 8576, P95, with Nuisance Level, Acid Gas Relief, 7000002061, 80 EA/Case
3M 29831, Sanding Screen, 180 Grit, 18 in x NH, 7100160238
3M 14343, Marine Adhesive Sealant 4000 UV, Black, 600 mL Sausage Pack, 7010309931, 12/Case
3M 35083, EMI Copper Foil Shielding Tape 1181, 1/4 in x 18 yd (6,35 mm x 16,5 m), 7000132168
Standard Abrasives 725008, Buff and Blend Cross Buff HP, A/O Very Fine, 1 in x 3/8 in x 2 Ply x 8-32, 7000046829
3M 05520, Sanding Block, Rubber, 2-3/4 in x 8 in, 7000028366
Standard Abrasives 725011, Buff and Blend Cross Buff HP, A/O VFN, 3/4 in x 3/8 in x 2 Ply x 8-32, 7000047134
Dynabrade 95848 Dynabrade Gear Oil
3M 35828, Hookit Dust Extraction Flexible Sanding Block, 406 mm x 67 mm, 7100256624
Standard Abrasives 265006, Buff and Blend Cross Buff HS, A/O Medium, 3/4 in x 3/8 in x 2 Ply x 8-32, 7010330373
Standard Abrasives 727399, Buff and Blend Cross Buff HS, A/O Medium, 2 in x 3/4 in x 2 Ply x 1/4-20, 7000047137
3M 81729, Disc Pad Face Plate Ribbed, 9 in Hard Black, 7000148244 
