540 Series 1-Component Adhesive Sealant, 10.1 oz Cartridge, Paste, Gray, 24 hr Curing

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3M 41594 540 Series 1-Component Adhesive Sealant, 10.1 oz Cartridge, Paste, Gray, 24 hr Curing

Item #: 41594 by 3M

UPC #: 021200415944

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$13.76 /cartridge


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  • Multi-purpose bonding and long-lasting seals
  • Permanently elastic to allow joint movement
  • 60 to 90 skin time, paintable, once skin forms
  • Good UV-resistance
  • One-component, moisture curing sealant simplifies production
  • Bonds dissimilar materials for increased design flexibility
  • Gap filling capabilities


For 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





Part no.


Specific Gravity


MFR Model


Applicable Materials

FRP, Metal, Plastic, SMC, Wood



Container Size (oz)


Curing Time

24 hr


Mild Xylene

Paintable (Y/N)



ASTM C920-11 Type S, Class 25, Grade NS | California Pro65 Warning: Cancer and Reproductive Harm | EU REACH | EU RoHS Compliant

Temperature Rating (deg F)

-40 to 194



Container Type


Tensile Strength

300 psi



Package Size

10.1 fl oz


24 hr

Maximum Operating Temperature

+194 °F

Minimum Operating Temperature

-40 °F

Product Form


Chemical Base


Hazardous Shipping


Shore Hardness

40 Shore A

Application Temperature Range

-40 °F to +194 °F

Alternative UPC


3M™ polyurethane sealant 540 is an all-purpose, single-component, moisture curing, gap filling polyurethane that creates permanently elastic seals and bonds in a wide variety of service environments. 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.
15 to 40% Urethane Polymer, 20 to 35% PVC Polymer, 10 to 30% Plasticizer, 1 to 5% Calcium Oxide, <5% Titanium Dioxide, <5% Xylene,<5% C.I. PIGMENT BLUE 15, <5% Iron Oxide (Fe2O3), <5% Iron Oxide (Fe3O4), <5% Iron Oxide (Fe3O4), <5% Petroleum Distillate, <5% DIISONONYL PHTHALATE, <5% Ethylbenzene, <1% Chromium oxide (Cr2O3), <5% IRON HYDROXIDE OXIDE, <1% Carbon Black, <1% C.I. PIGMENT BLUE 36, <0.1% P,P'-Methylenebis(phenyl isocyanate)
3M 540 gray polyurethane adhesive sealant is compatible with plastics, frp, smc, metals and wood materials with a 24 hr cure time. Delivers great performance with tensile strength of 300 psi. Minimum to maximum operating temperatures are -40 F to +194 F. Comes in a 10.1 fl oz Cartridge. This polyurethane adhesive sealant is packaged 12 per case. This polyurethane adhesive sealant meets the following standards: ASTM C920-11 Type:S Class:25 Grade:NS Other:Uses: NT, G, M, and A (With Exceptions - Par. 8.8 Adhesion and Coadhesion under Cyclic Movement on Unprimed Glass and Aluminum.).

3M Number: 540

Material Compatibility:

  • Plastics
  • FRP
  • SMC
  • Metals
  • Wood

Shelf Life: 12 mo

Standards Met: ASTM C920-11 Type:S Class:25 Grade:NS Other:Uses: NT, G, M, and A (With Exceptions - Par. 8.8 Adhesion and Coadhesion under Cyclic Movement on Unprimed Glass and Aluminum.)

Storage Condition:

  • Keep Container in Well-Ventilated Area
  • Keep in Cool and Dry Place

Specification parameters description:

Chemical Base:
Chemical base is the primary substance in the product. Adhesives with methacrylate bases are used in structural bonding applications and work well with tough-to-bond materials. Silicone-based adhesives are extremely flexible and ideal in high-heat environments. Epoxy-based adhesives are available with different resins and hardeners to bond effectively with a broad range of materials.
Material Compatibility:
Material compatibility lists which materials the product fills. Acrylic adhesives are suitable for use on a wide range of materials including wood, ceramic, fiberglass, metal, and plastic. Contact adhesive is typically used on wood, drywall, concrete, and vinyl. Methacrylate adhesives are compatible with metal, acrylic, PVC, and gelcoat. In addition to material compatibility, other factors may determine the best type of adhesive for a certain application such as brittleness, flexibility, and the adhesive?s resistance features.
Cure Time:
Cure time is the length of time it takes for the adhesive to completely dry or harden. Different cure times may determine the best application method of the adhesive. Since most polyurethane adhesives cure quickly, dispensing machines are ideal in these applications. Light curing adhesives require light sources within specific wavelengths to cure where the strength of the light source affects cure time. Depending on the particular adhesive, temperature and humidity greatly increases or decreases the actual cure time. Many acrylic adhesives cure quicker than epoxies.
Standards Met:
ASTM - ASTM International, formerly known as American Society for Testing and Materials CAN/ULC - Underwriters Laboratories of Canada IBC - International Building Code IFC - Industry Foundation Classes IFGC - International Fuel Gas Code IMC - International Mechanical Code IPC - Association Connecting Electronics Industries, formerly known as Institute for Interconnecting and Packaging Electronic Circuits IRC - International Residential Code NBCC - National Building Code of Canada NCB - National Certification Body NEC - National Electrical Code NFPA - National Fire Protection Association UL - Underwriters Laboratories