3M SJ3560 Dual Lock 25 mm x 25 mm

The 3M™ Dual Lock™ SJ3560 is a high-strength, reclosable, translucent, and flexible fastening system. It allows for a solid yet removable and repositionable attachment, thanks to the inter-locking mushroom-head stems (density 250) and the VHB™ adhesive on the back.

Being translucent, it is the optimal choice for applications on glass, acrylic, and translucent surfaces.

It's ideal for replacing screws, nails, rivets, and other mechanical fasteners.

25 mm x 65 mm squares, minimum purchase of 10 pieces (5 pairs).

Key Features

• High holding power
• Suitable for various substrates: the adhesive guarantees excellent and durable adhesion on surfaces like metals (aluminum, stainless steel), glass, plastics (acrylic, polycarbonate, ABS), and paints.
• Reclosable (up to 1000 Cycles): it retains 50% of its original strength after approximately 1000 open/close cycles, making it extremely durable.
• Extreme resistance: Exceptional resistance to UV rays, moisture, and plasticizers, ideal for both indoor and outdoor use.
• Thermal resistance: Maintains performance within an operating temperature range of up to 104 °C (maximum intermittent temperature).

Technical Specifications

Advantages

• Easy installation and removal: replaces mechanical systems that require drilling and tools, allowing for quick assembly and disassembly without damaging surfaces.
• Reduction of vibrations and noise: the interlocking of the mushroom heads helps to absorb and dampen vibrations.
• Design flexibility: allows the fastening of components that need to be removed frequently for maintenance or inspection.•

Applications

The 3M™ Dual Lock™ SJ3560 is versatile and widely used in industries requiring strong and reclosable fastening:

• Displays and signage: mounting signs, graphic panels, window displays, and point-of-sale (POP/POS) displays, especially on transparent surfaces.
• Automotive: fastening interior accessories (panels, sensors) and supports for devices like toll tags.
• Electronics: securing access panels, covers, and components in electronic equipment and electrical cabinets.
• Furniture and design: installation of decorative panels, office partitions, and fastening components on glass or acrylic.

In this 25 mm x 66 mm squares format, it is particularly suitable for fastening electronic toll collection devices (like Telepass) in cars.

Application Instructions

To ensure maximum fastener performance, it is important to:

1. Clean the application surface with an appropriate solvent (e.g., a 50:50 mixture of isopropyl alcohol and water) to remove dirt, grease, and oil. The surface must be dry and clean.
2. Application Temperature: Apply the tape at an optimal room temperature of 20 °C - 38 °C.
3. Mate the two Dual Lock pieces together (the tape is single-component and self-mates).
4. After applying the two pieces to their respective surfaces, apply firm pressure over the entire area of the fastener for at least 15-30 seconds to ensure optimal adhesive contact with the substrate.
5. The adhesive reaches its maximum holding strength after approximately 72 hours from application. Avoid subjecting the fastener to heavy loads in the first 24 hours.

Frequently Asked Questions (FAQ)

Q: How does the Dual Lock SJ3560 fasten?

A: The mushroom-head stems interlock perfectly with each other (self-mating). Therefore, a pack of 10 pieces forms 5 pairs.

Q: Is the Dual Lock SJ3560 water-resistant?

A: Yes, thanks to the Acrylic VHB™ adhesive and the polyolefin stem, the fastener offers excellent moisture resistance and can be used both indoors and outdoors.

Q: How much weight can it hold?

A: The load capacity depends on the contact surface and the type of application (shear or tension).

Q: Can I use the SJ3560 on painted surfaces?

A: For LSE plastics and painted surfaces, it is suggested to use 3M Primer 94, but it is better to test it.