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 45208, Disc Pad Face Plate, 5 in Soft White, 7000120521
3M 05710, Buff Pad Adaptor, 05710, 5/8 in, 7100017371
3M 22396, Roloc Disc 361F, 36 YF-weight, TR, 1-1/2 in, Die R150S, 7000045091
Standard Abrasives 709700, A/O Straight Cartridge Roll, 1/4 in x 1-1/2 in x 1/8 in 320, 7100080013
Standard Abrasives 843937, Quick Change Surface Conditioning GP Disc, 2560593, A/O Coarse, TSM, Brown, 7 in x 5/8"-11, 7000121657, 10/case
Dynabrade 79170 1" W x 30" L 60 Grit Ceramic DynaCut Belt, 50/pack
3M 62606, Scotch-Weld Threadlocker TL42, Blue, 50 mL Bottle, 7100039193, 10/case
Air Turbine Tools 310RSV - 6mm Router Hand Tool Series, 40,000RPM, 33441
3M 49937, Roloc Disc 361F, 60 YF-weight, TSM, 2 in, Die RS200PM, 7000119016
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 09277, Regalite Floor Surfacing Discs, 7 in x 5/16 in, 752I, 40 Grit, 7010301729, 200/case
3M 01329, Stikit Gold Film Disc Roll, 6 in, P180 grade, 7010364218, 75 discs per roll
3M 76790, Roloc Disc 361F, 60 YF-weight, TS, 2 in, Die RS200P, 7010300088
Dynabrade 40320 Dynafile II Abrasive Belt Tool
3M 72600, 663FC 1/2" X 30", 70u Diamond Trizact Belt, 7100206529
3M 76624, Roloc Disc 777F, 60 YF-weight, TR, 1 in, Die R100N, 7000045620
3Mâ„¢ 37018, Supplied Air Respirator Vortex Cooling Assembly V-100/37018(AAD), 70070799013, 1 EA/Case
3M 98242, Marine Adhesive Sealant 3000 UV, Black, 290 mL Cartridge, 7100111111, 12/Case
3M 35790, 675L, 1" X 120", 74u, Diamond Microfinishing Film Belts, 7010509196
3M 22392, Roloc Disc 361F, 24 YF-weight, TR, 3 in, Die R300V, 7000045090
3M 25774, Scotch-Brite Roloc Surface Conditioning Disc, TSM, 1-1/2 in x NH A MED, 7100014112, 200 per case
3M 28126, Hookit Clean Sanding Disc 900DZ, 5 in 80 J-weight, Die 500LG, 7010290258
3M 29834, Sanding Screen, 100 Grit, 18 in x NH, 7100160819
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit
3M 22394, Roloc Disc 361F, 50 YF-weight, TR, 3 in, Die R300V, 7000045096
3M 87449 Silver Depressed Center Grinding Wheel, T27 Quick Change, 9 in x 1/4 in x 5/8-11 Center Hub Thread, 7010409732, 20 per case
3M 14593, Scotch-Brite Cut and Polish Disc, 3" x 1-1/4" x 1/4" A Medium, D5, 7000045941, Box of 10
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
3M 85855, Cartridge Roll 747D, 80 X-weight, 5/8 in x 1-1/2 in x 3/16 in, 7010292565
3M 05205, Marine Adhesive Sealant 5200, Black, 3 oz Tube, 7000118402, 6/Case 
