Multi Purpose Sealant with Good UV Resistance
3M Polyurethane Sealant 540 is a single component, moisture curing, polyurethane sealant used to bond a wide variety of materials, including plastics, fiberglass reinforced plastic (FRP), sheet molding compound (SMC), aluminum, steel, coated metal and wood. It exhibits high tensile strength, good UV resistance, low Shore A hardness and low modulus to maintain its functionality in a wide range of extreme service environments. Available in cartridge, sausage pack, pail and drum volumes to meet your application needs.
Recommended Applications
- Vertical and horizontal panel bonding and joint sealing
- Aluminum curtain walls and storefronts
- Transportation manufacturing (bus, rail, truck, trailer)
- Replacement of mechanical fasteners in many situations
Paintable after Skin Forms for Improved Appearance
3M Polyurethane Sealant 540 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 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 62606, Scotch-Weld Threadlocker TL42, Blue, 50 mL Bottle, 7100039193, 10/case
3M 50216, Temflex Cotton Friction Tape 1755, 3/4 in x 82-1/2 ft, Black, 7010297809
3M 03027, Scotch General Purpose Cloth Duct Tape 393, Silver, 48 mm x 54.8 m, 12 mil, 7000048964
ACS Diamond Cloth Belt, CX1250 3/8" X 24" 75U
3M 93947, Scotch Stucco Tape 3260-A, 1.88 in x 60 yd (48 mm x 54.8 m), Stucco Tape, 7010384961
3M 62607, Scotch-Weld Threadlocker TL42, Blue, 250 mL Bottle, 7100039192, 2/case
3M 43474, Glass Cloth Tape 3615, White, 1 in x 36 yd, 7 mil, 7000048876
3M 97841, Value Duct Tape 1900, Silver, 1.88 in x 60 yd, 5.8 mil, 7010375734
3M 07591, Outdoor Masking Poly Tape 5903, Red, 5 in x 60 yd, 7.5 mil, 7010334725
3M 64070, Contractor Grade Pro Strength Duct Tape 3979, Silver, 1.88 in x 60 yd, 7010375912
3M 34786, 663FC, 3/4" X 90", 70u, Diamond Trizact Belts 7100063667
3M 95723, Scotch Automotive Cloth Tape 06980, Olive, 50.8 mm x 18.2 m, 7010312582
3M 63738, Contractor Grade Multi-Use Duct Tape 2979, Silver, 1.88 in x 60 yd, 7010335692
3M 49830, Multi-Purpose Duct Tape 3900, Red, 48 mm x 54.8 m, 8.1 mil, 7000144749
3M 98534, Premium Matte Cloth (Gaffers) Tape GT3, Black, 72 mm x 50 m, 11 mil, 7010291525
Standard Abrasives 700743, Cartridge RoII Mandrel, 1/8 in x 3/4 in x 1/8 in x 1 in x 2-3/4 in CM-4, 7010368728
3M 08583, Elevated Temperature Aluminum Front Helmet Cover, FC1-AL, Silver, 60 EA/Case, 7100082486
3M 50013, Venture Tape Cloth Duct Tape 1500, Silver, 72 mm x 55 m (2.83 in x 60.1 yd), 7010337384
3M 53915, Performance Plus Duct Tape 8979N (Nuclear), Red, 72 mm x 54.8 m, 12.1 mil, 7010334653
3M 06970, Scotch Polyethylene Coated Cloth Tape 390, Olive, 48 mm x 54.8 m, 11.7 mil, 7000048963
3M 98242, Marine Adhesive Sealant 3000 UV, Black, 290 mL Cartridge, 7100111111, 12/Case 
