3M Dual Lock System

3M Dual Lock System | Heavy-Duty Reclosable Fastener for Boats & Marine Equipment

Revolutionize the way you mount, secure, and access equipment on your boat with the 3M™ Dual Lock™ Reclosable Fastener System. Say goodbye to drilling permanent holes in your vessel´s fiberglass, wood, or metal surfaces. This industrial-strength fastening solution provides exceptional holding power with the flexibility of being opened and closed hundreds of times, making it the ultimate choice for marine accessories and parts.

3M™ Dual Lock™ Reclosable Fastener SJ3550 is the convenient alternative to traditional fastening methods, such as screws, nuts or bolts.

It is designed to deliver a durable, reclosable fastening solution (which can be opened and closed multiple times) which bonds to a variety of substrates including metals and plastics such as acrylics, polycarbonate and ABS.

Unlike standard hook-and-loop systems, Dual Lock fasteners feature unique, interlocking mushroom-shaped stems that snap together with an audible click, confirming a secure and rigid connection. This robust design provides superior tensile strength, making it ideal for the demanding marine environment where vibration and shock are constant.

Key Benefits for Your Boat:

* Drill-Free Installation: Preserve the integrity and value of your boat’s hull and surfaces. The high-performance acrylic adhesive backing creates an incredibly strong, waterproof bond without the need for screws or rivets, preventing potential leak points.
* Exceptional Strength & Durability: Engineered to hold strong against vibrations, moisture, salt spray, and UV exposure. Securely mount heavy items and trust they will stay in place, even in rough waters.
* Unmatched Versatility & Access: Perfect for mounting electronics like GPS units, fishfinders, and VHF radios that may need to be removed for security or servicing. Ideal for securing access panels, hatches, seat cushions, headliners, and storage organizers.
* Clean, Professional Appearance: Achieve a sleek, seamless look with no visible hardware. The hidden fastening system provides a "straight from the factory" finish to your installations and modifications.

Main Features:

* Interlocking mushroom-shaped stems that create a fixed, rigid connection.
* An audible "snap" that provides clear confirmation of a secure closure.
* A powerful, pressure-sensitive acrylic adhesive that bonds to a wide range of surfaces.
* Excellent resistance to water, UV light, and plasticizers for long-lasting performance.
* Up to 5 times the tensile strength of conventional hook-and-loop fasteners.

Closures

The 3M Dual Lock System provides a robust and reliable closure mechanism. When two strips are pressed together, the mushroom-shaped heads slide past each other and then interlock. This creates a strong, positive engagement that resists shear and pull forces. To open, simply peel the pieces apart. The system is designed for up to 1.000 opening and closing cycles before any noticeable loss of holding power.

Technical Specifications:

* Product: 3M™ Dual Lock™ Reclosable Fastener SJ3550
* Stem Density: 250 stems per square inch
* Adhesive Type: White Acrylic Adhesive (VHB™ Brand)
* Engaged Thickness: 0.23 in (5.8 mm)
* Liner Type: Clear Polypropylene
* Indoor/Outdoor: Both
* Temperature Resistance: -20°F to 200°F (-29°C to 93°C)
* Substrate Compatibility: Metals (Aluminum, Stainless Steel), Plastics (Acrylic, Polycarbonate, ABS), Glass, and Sealed Wood, Powder Coated and Painted Surfaces