Description
3M™ Polyurethane Adhesive Sealant 540 is a flexible, one-component polyurethane sealant designed for demanding sealing applications across transportation, metalworking, construction and general industry. Its low-modulus formulation provides permanently elastic bonds between different materials, while moisture-curing technology simplifies application without the need for mixing or priming in most applications. Supplied in a 310ml black cartridge, it offers excellent weather resistance and can be painted once cured.
- Flexible one-component polyurethane sealant
- Low modulus for sealing between different materials
- Permanently elastic and non-staining
- 45–60 minute skin time
- Paintable once tack-free
- Excellent weather resistance
- No mixing or priming required for most applications
- Suitable for horizontal and vertical sealing applications
Read More
3M™ Polyurethane Adhesive Sealant 540 is formulated for applications where a flexible, durable seal is required. Its low-modulus formulation allows the sealant to accommodate movement between different materials while maintaining a permanently elastic bond, making it suitable for a wide range of industrial and construction applications.
The one-component, moisture-curing formulation is ready to use and requires no mixing, helping simplify production and installation. Once applied, the sealant develops a tack-free surface in approximately one hour and can then be painted, while its excellent weather resistance makes it suitable for both indoor and outdoor applications.
Why Choose 3M™ Polyurethane Adhesive Sealant 540?
3M™ 540 combines ease of application with durable, flexible sealing performance. It is suitable for sealing expansion joints, aluminium curtain walls, storefronts, doors and windows, as well as applications where a reliable seal is required in transportation, metalworking and general industry.
Key Features
Flexible Polyurethane Formulation
Provides a permanently elastic seal that can accommodate movement between different materials without compromising sealing performance.
One-Component Application
Ready-to-use moisture-curing formulation eliminates the need for mixing and generally does not require priming, helping simplify application and production processes.
Paintable
Once tack-free, the sealant can be painted, allowing the finished application to blend with surrounding surfaces.
Weather Resistant
Provides excellent resistance to weathering, making it suitable for demanding indoor and outdoor sealing applications.
Versatile Sealing Applications
Suitable for expansion joints, aluminium curtain walls, storefronts, doors, windows and submerged applications across a variety of industries.
Ideal For:
Transportation
Metalworking
Construction
General Industry
Expansion Joints
Doors & Windows
Aluminium Curtain Walls & Storefronts
Why Buy from Specialised Welding Products?
- Next Working Day Delivery
- Free Click & Collect
- Professional-Grade Equipment
- UK Leading Stockist & Supplier
- UK-Based Technical Support
- Selected by Professionals
- Supplying over 1,500 distributors
- Established since 1991
Specifications
- Product Type: Polyurethane Adhesive Sealant
- Brand: 3M™
- Product Colour: Black
- Volume: 310ml
- Application Method: Hand or Pressure Caulk
- Cure Type: Moisture Curing
- Tack-Free Time: Approximately 1 Hour
- Full Cure Rate: 3mm/24 Hours, >3mm/24 Hours
- Hardness: 40 Shore A
- Modulus at 100%: 58 psi
- Tensile Strength: 250 psi
- Solids Content: Approximately 90%
- Permeability: Permeable
- Application Temperature: 5°C to 35°C
- Minimum Operating Temperature: -40°C
- Maximum Operating Temperature: 90°C
- Surface Type: Painted Surfaces
