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 01295, Hookit Red Abrasive Disc, 5 in, P320, 7000119857, 50 discs per carton
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092
Dynabrade 91642 2" W x 36" L 320 Grit A/O DynaCut Belt, 10/pack
3M 27840, Hookit Paper Disc 426U, 280 A-weight, 5 in x NH, Die 500X, 7010362357
Dynabrade 14230 Rubber Drive Wheel
3M 01550, Green Corps Stikit Production Disc, 8 in, 40, 7000120329, 50 discs per carton
Dynabrade 90679 2" W x 30" L 120 Grit A/O DynaCut Belt, 10/pack
3M 36452, Blue Net Disc Roll, 180, 3 in, 7100254364, 100 Discs/Roll
3M 36411, Blue Net Disc, 80, 8 in, 7100253870, 25 Discs/Carton
3M 01297, Hookit Red Abrasive Disc, 5 in, P220, 7000119855, 50 discs per carton
Dynabrade 01185 Vane Set (4pk)
3M 36876, Self-Stick Liquid Protection Fabric, Blue, 4 in x 300 ft perroll, 7100169348, 6 Rolls Per Pack
3M 13770, Scotch-Brite EXL Unitized Wheel, XL-UW, 8A Medium, 3 in x 1/2 in x 3/8 in, 7000000694
Dynabrade 07107 Vane Set (5pk)
Dynabrade 15336 Rubber Drive Wheel
Standard Abrasives 37462, PSA A/O Disc, 710857, 3 in x NH, 60, 7010331823
3M 21543, Scotch-Brite Roloc Clean and Strip XT Pro Extra Cut Disc, TR, 2 in x NH, A XCS, 7100179815, 60/box
Dynabrade 95848 Dynabrade Gear Oil
3M™ 94275, Versaflo™ Gold Coated Tinted Over-Visor with UV/IR Protection M-967N, 70071696879, 1 EA/Case
3M 01678, Hookit Red Abrasive Disc, 8 in, 40, 7000119921, 25 discs per carton
3M 06586, Marine, Adhesive, Sealant, 4000, UV, White, 400, mL, milliliter, Sausage, Pack, 7000121532, 12/ case
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 14343, Marine Adhesive Sealant 4000 UV, Black, 600 mL Sausage Pack, 7010309931, 12/Case 
