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 21543, Scotch-Brite Roloc Clean and Strip XT Pro Extra Cut Disc, TR, 2 in x NH, A XCS, 7100179815, 60/box
Dynabrade 11477 Dynabelter Abrasive Belt Tool, Heavy-Duty
3M 20928, PSA Cloth Disc 348D, P180 X-weight, 1 in x NH, Die 100N, 7000118917
3M 95725, Venture Tape Metal Building Facing Tape 1552CW, White, 72 mm x 45.7 m, 7010313505
3M 26102, PPS Series 2.0 Adapter, Type S16, 3/8 Female, 19 Thread BSP, 7100135934
Insize 1120-150AE, DIGITAL INSIDE GROOVE CALIPER, 1-6"/25.4-150mm, 6928640326608
3M 76624, Roloc Disc 777F, 60 YF-weight, TR, 1 in, Die R100N, 7000045620
ACS CX1250 Diamond Belt, 1/2" X 24" 175u
Norton 66623335427, 2" Dia Vortex Rapid Prep Quick-Change Non-Woven Abrasive Disc, Medium Grade, 50 Each
3M 05182, Scotch-Brite Cut and Polish Wheel, CP-WL, 5A Fine, 6 in x 1/2 in x 1 in, 7100050403,Box of 4
3M 11411, Roloc Disc 361F, 50 YF-weight, TR, 1 in, Die R100N, 7000045095
3M 20931, PSA Cloth Disc 348D, P100 X-weight, 1 in x NH, Die 100N, 7000118915
3M 05206, Marine Adhesive Sealant 5200, White, 1 oz Tube, 7010325697, 12/Case
3M 06586, Marine, Adhesive, Sealant, 4000, UV, White, 400, mL, milliliter, Sausage, Pack, 7000121532, 12/ case
3M 86805, Cubitron II Stikit Film Disc 775L, 120+, 6 in x NH, Linered w/Tab, Die 600Z, 7100045867, 250 per case
3M 11414, Roloc Disc 361F, P120 XF-weight, TR, 1 in, Die R100N, 7000045104
3M 21762, Stikit Cloth Disc Roll 341D, 60 X-weight, 6 in x NH, Die 600Z, 7000118780
3M 63174, Scotch Foil Tape 3311, Silver, 2.83 in x 50 yd, 3.6 mil, 7010313061
3M 08023, Adhesive Sealant 740 UV, White, 600 mL Sausage Pack, 7000000933, 12/Case 
