3M Adhesive Sealant 540
Application Type Adhesive, Seal 1 Part or 2 Part 1-Part Material Form Medium paste Substrate Acrylic, FRP, Fiberglass , Metal, Nylon 66, ABS, Polycarbonate, Polypropylene, PVC, Cold rolled Steel, Fir, Stainless Steel, PolyEthylene, EPDM, Plastic, Steel, Wood Industry Wire, Transportaion, Trains, Trucks, Two Wheel Vehicles, Commercial & Specialty Vehicles, Trailers Manufacturer 3M Chemistry Methyl ethyl ketone (MEK), Polyurethane Application Method Spatula, Trowel Cure Method Moisture Cure Temperature (°C) 23 Cure Time (min) 1,440, Fast Viscosity (cPs) Non-sag Color Black, Gray, White High Temperature Resistance (°C) 90 Low Temperature Resistance (°C) -40
Technical Data for 3M Adhesive Sealant 540
1 Part or 2 Part
- Paste - Medium paste
- Other - Methyl ethyl ketone (MEK)
- Dispenser - Application equipment
- Flow - Flow equipment
- Spatula/Trowel - Spatula, Trowel
- Moisture / Condensation Cure - Moisture
Application Temperature (°F) 41 to 95 Cure Temperature (°C) 23 Test Method Cure Time (min) 1,440, Fast Test Method Viscosity (cPs) Non-sag Tack Free Time (min) 60 to 90 Test Method
Tensile Strength (psi) High, 300 Test Method
Non-Corrosive Corrosion UV Resistance Good High Temperature Resistance (°C) 90 Low Temperature Resistance (°C) -40 Moisture/Humidity Resistance Excellent water resistance
Shore A Hardness 40 Test Method Elongation (%) >600 Test Method Flexibility Flexible, Permanent elastic Modulus (psi) Low, 125 Test Method
Specific Gravity 1.170 Flash Point (°F) 136.4 % Solids (%) >90
Shelf Life Details Storage: Polyurethane sealants and adhesive sealants must be stored in a controlled environment to maximize shelf life. Store the products in the original unopened containers below 77°F (25C).;Shelf Life: When stored at recommended conditions, the shelf life is 6 months from date of shipment from 3M., Polyurethane sealants and adhesive sealants must be stored in a controlled environment to maximize shelf life. Store the products in the original unopened containers below 77°F (25C).;When stored at recommended conditions, the shelf life of cartridges and sausage packs is 12 months from the date of manufacture. For 5 and 55 gallon containers, the shelf life is 6 months from date of manufacture. Shelf Life Temperature (°F) <77 Room Temperature, <77 Room Temperature Shelf Life Type From date of manufacture, From date of manufacture Shelf Life (mon) 12, 6
Best Practices for 3M Adhesive Sealant 540
Surfaces to be sealed or bonded should be clean and dry. Surfaces should be free from grease, mold release, oil, water/condensation, and other contaminates that may affect the adhesion of the sealant. Abrading with 180 to 220 grit abrasive followed by a solvent wipe will improve the bond strength. Suitable solvents include 3M™ Adhesive Remover or methyl ethyl ketone (MEK)*.
*When using solvents, use in a well ventilated area. Extinguish all sources of ignition in the work area and observe product directions for use and precautionary measures.
Loading the applicator gun: make sure the applicator is set up with correct plunger attachment for cartridge or sausage pack.
Cartridge: Puncture seal in nozzle and remove the pull-tab seal at the bottom of the cartridge. Load into applicator and fix retaining ring (if applicable). Assemble the nozzle (if applicable) and cut to desired size and shape.
Sausage Pack: Make a 1" slit close to the crimp on one end of the sausage pack. Load the sausage pack into the applicator barrel (slit side out). Place the rounded end of the supplied sausage nozzle onto the slit end of the sausage package and fix with retaining ring. Cut nozzle to desired size and shape.
Product should be used within 24 hours after seal is punctured. Dispense product with the nozzle tip in contact with the substrate to insure good gap filling. Bonding must occur within the first 50% of published skin time.
Do not apply polyurethane sealants and adhesive sealants on frozen nor wet surfaces. Do not apply over silicone nor in the presence of curing silicone nor hybrid products. Avoid contact with alcohol and solvents during curing. Sealant can be tooled immediately after applying to give desired appearance.
While sealant is still soft, cleaning can be done with the same solvents used for surface preparation. Avoid cleaning with alcohol as it will interfere with the curing process. If sealant is already cured, removal is done mechanically with razor knife, piano wire, sanding or 3M™ Scotch-Brite™ Molding adhesive and Stripe Removal Disc.
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Cure Temperature Test Methods
|Cure Temperature||Cure Time Test Method|
|23°C||Rate of Cure @ 73°F and 50% Relative Humidity, 1/8" (3 mm) per 24 hour|
Cure Time Test Methods
|Cure Time||Test Method|
|1,440 min||Rate of Cure @ 73°F and 50% Relative Humidity, 1/8" (3 mm) per 24 hour|
Tack Free Time Test Methods
|Tack Free Time||Tack Free Temperature||Test Method|
|60 to 90 min||23°C||Tack-Free Time @ 73°F and 50% Relative Humidity|
Tensile Strength Test Methods
|Tensile Strength||Test Method|
|300 psi||ASTM D412|
Elongation Test Methods
|>600 %||ASTM D412|
Modulus Test Methods
|Low||Modulus Test Method|
|125 psi||ASTM D412, 100% modulus|
Shore A Hardness Test Methods
|Shore A Hardness||Shore Hardness Test Method|