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 95442, Selfwound PVC Tape 1506R, Black, 1-1/2 in x 36 yd, 6 mil, 24 rollsper case, 7100043914
3M 50336, Scotch-Seal Mastic Tape Compound 2229, 3-3/4 in x 3-3/4 in, Black,10 pads/carton, 40 pads/Case, 7000132526
3M 26112, PPS Series 2.0 Spray Cup System Kit, Midi (13.5 fl oz, 400
mL), 200 Micron Filter, 7100169390
3M 41754, Scotch Linerless Rubber Splicing Tape 130C, 2 in x 30 ft, Black, 7000006091
3M 06293, Soft Edge Foam Masking Tape +, 06293, 21mm x 49m, 1 per case, 7000000527
3M 93608, Scotch Artist Tape FA2010, 3/4 in x 10 yd, 7010383671
3M 02859, High Performance Masking Tape 232, Tan, 96 mm x 55 m, 6.3 mil, 8Roll/Case, 7000124033
3M 43962, Temflex Vinyl Electrical Tape 1700, 1 in x 66 ft, Black, 7000132902
Dynabrade 53533 Cone or Plug Grinder (Triple Extension)
Scotch Electrical Semi-Conducting Tape 13, 3/4 in x 60 ft, Printed, Black, 7010402114
3M 06297, Soft Edge Foam Masking Tape, 06297, 13 mm x 50 m, 1 per case, 7000000514
3M 06308, Scotch Fine Line Tape 218, Green, 3/32 in x 60 yd, 5.0 mil, (12Roll/Carton) 144 Roll/Case, 7000050054
3M 06303, Scotch Fine Line Tape 218, Green, 1/2 in x 60 yd, 5.0 mil, 72 Rolls/Case, 7000048458
3M 06506, Scotch Steel Gray Masking Paper, 06506, 6 in x 1000 ft, 6 per case, 7000045440 
