Premium 3M Dual Lock reclosable fastener with black mushroom heads, 170 stem density, rated for 1,000 closure cycles. Ideal for industrial attachment, access panels, and specialty vehicles. Provides 5X tensile strength of hook-and-loop products with audible snap closure verification.
The 3M™ Dual Lock™ Reclosable Fastener SJ3552 is a premium industrial-grade fastening solution featuring black interlocking mushroom-shaped heads with 170 stem density per square inch. This innovative fastener provides strong, reliable, and durable fastening that can be opened and closed multiple times without compromising performance. With the ability to withstand up to 1,000 closure cycles before losing 50% of its original strength, this product delivers exceptional longevity and reliability for repeated access or repositioning applications.
The fastener utilizes a white acrylic conformable foam tape that bonds exceptionally well to a variety of substrates including metals and plastics such as acrylics, polycarbonate, and ABS. Protected by a removable film liner, the pressure-sensitive foam tape offers outstanding resistance to heat, chemicals, and UV exposure. The product features an engaged thickness of 226 mils (5.8mm) and operates effectively at temperatures up to 200°F (93°C), making it suitable for both indoor and outdoor applications.
As a superior alternative to traditional fastening methods such as screws, nuts, and bolts, the 3M Dual Lock SJ3552 eliminates the need for drilling, screwing, or sewing tools, enabling quick and efficient installation. The fastener produces an audible snap when secure, providing verification of proper closure. When mated, the fasteners remain hidden from view, leaving an unbroken surface for a smooth, clean aesthetic appearance. This reclosable fastening system is ideal for access panels, graphic attachment, specialty vehicle interior attachments, general industrial attachment, and small component fastening.
Key Features
- Black interlocking mushroom-shaped heads with 170 stem density per square inch
- Can be opened and closed up to 1,000 times before losing 50% of original strength
- Provides 5X tensile strength compared to typical hook-and-loop products
- White acrylic conformable foam tape with excellent heat, chemical, and UV resistance
- Produces audible snap when secure to verify proper closure
- Mates with Type 250 and Type 400 stem densities for customizable strength combinations
- Temperature resistant up to 200°F (93°C) for indoor and outdoor use
- No drilling, screwing, or sewing required for quick installation
- Hidden fastener provides smooth, clean aesthetic appearance
- Suitable for access panels, graphic attachment, specialty vehicles, and industrial applications
Technical Specifications
| Specification |
Value |
| Part Number | SJ3552 |
| Product Form | Roll |
| Product Color | Black |
| Overall Width (Imperial) | 0.75 in |
| Overall Width (Metric) | 19.05 mm |
| Overall Length (Imperial) | 50 yd |
| Overall Length (Metric) | 45.72 m |
| Engaged Thickness (Imperial) | 226 mil |
| Engaged Thickness (Metric) | 5.8 mm |
| Stem Density | 170 stems per square inch |
| Adhesive Color | Black |
| Backing Material | Polyolefin |
| Primary Liner | Clear Polyolefin |
| Primary Liner Color | Transparent |
| Primary Liner Thickness (Imperial) | 4 mil |
| Primary Liner Thickness (Metric) | 0.1 mm |
| Maximum Operating Temperature (Fahrenheit) | 200°F |
| Maximum Operating Temperature (Celsius) | 93°C |
| Closure Life | 1000 cycles |
| Flame Retardant | No |
| Indoor/Outdoor | Indoor/Outdoor |
| Units per Case | 2 rolls |
| Smallest Saleable Unit | Roll |
| Brand | 3M Dual Lock |
| UPC | 00021200863615 |
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