3M SJ3870 Dual Lock Reclosable Fastener 25mm × 1000mm

High-Performance Reclosable Fastening Solution

The 3M SJ3870 Dual Lock Reclosable Fastener provides a heavy-duty alternative to traditional mechanical fasteners like screws, bolts, and rivets. Featuring a modified acrylic adhesive on a black polypropylene backing, this 25mm x 1000mm strip offers a secure yet hidden attachment for a wide range of substrates.

Advanced Interlocking Technology

Utilizing Type 250 stem density, the mushroom-shaped heads interlock with an audible snap, ensuring a firm connection. This system is five times stronger in tensile strength than standard hook-and-loop fasteners, yet it remains easy to peel apart for repositioning or maintenance. It is designed to withstand up to 1,000 opening and closing cycles before losing significant strength.

Durable Adhesive and Weather Resistance

The modified acrylic adhesive is engineered to bond effectively to medium to low surface energy materials, including polyethylene, polycarbonate, ABS, and powder-coated paints. With a slim 6.1 mm engaged thickness and resistance to temperatures up to 82 degrees Celsius, the SJ3870 is suitable for both indoor and outdoor environments.

Common Applications

• Transportation: Securing headliners and interior panels.
• Electronics: Mounting components and access panels.
• Signage: Installing point-of-purchase displays and exhibits.
• Maintenance: Quick-release panels for industrial machinery.