Professional-grade reclosable fastener with interlocking mushroom heads offering 5X stronger tensile strength than standard hook-and-loop products. Reusable hundreds of times with audible snap closure, ideal for interior mounting, signage, and trim applications.
The 3M™ Dual Lock™ Reclosable Fastener SJ3541 is a revolutionary alternative to traditional fastening methods such as screws, nuts, and bolts. Featuring interlocking mushroom-shaped heads with a 400 stem density per square inch, this fastener delivers exceptional strength with up to 5X the tensile strength of typical hook-and-loop products. The black synthetic rubber-based PE foam tape is protected by a removable film liner and features a pressure-sensitive adhesive with quick stick and short dwell time, enabling rapid installation without the need for drilling, screwing, or sewing tools.
This reclosable fastening solution can be opened and closed multiple times, making it ideal for applications requiring repeated attachment and detachment. The fastener mates with Type 170 and Type 250 stem densities to provide customizable strength combinations for different project requirements. With an audible snap verification upon closure and the ability to be easily peeled apart by hand, the SJ3541 maintains its strength throughout hundreds of reattachments, making it a durable and reliable fastening system for indoor use.
The product comes in a convenient 2-roll case with each roll measuring 3/4 inch width by 50 yards in length. Its synthetic rubber-based adhesive bonds exceptionally well to a variety of substrates including low surface energy plastics such as polyethylene and polypropylene. Ideal for access panels, interior signage, decorative trim, office partitions, and product IDs, this fastener provides a snug fit and smooth aesthetic appearance while maintaining good temperature resistance up to 120°F (49°C).
Key Features
- Interlocking mushroom-shaped heads with 400 stem density per square inch for exceptional strength
- Provides up to 5X tensile strength compared to typical hook-and-loop fastening products
- Reclosable design allows hundreds of attachment and detachment cycles without strength loss
- Audible snap verification confirms secure closure with tactile feedback
- Synthetic rubber-based adhesive bonds well to low surface energy plastics and various substrates
- Quick installation without drilling, screwing, or sewing tools required
- Compatible with Type 170 and Type 250 stem densities for customizable strength combinations
- Temperature resistant up to 120°F (49°C) for reliable indoor performance
- Smooth aesthetic appearance provides design flexibility and hidden fastening
- Easy hand-peel separation without additional tools or equipment needed
Technical Specifications
| Specification |
Value |
| Product Name | 3M Dual Lock Reclosable Fastener SJ3541 |
| Part Number | SJ3541 |
| UPC Code | 00021200863646 |
| Product Form | Roll |
| Overall Width (Imperial) | 0.75 inches |
| Overall Width (Metric) | 19.05 millimeters |
| Overall Length (Imperial) | 50 yards |
| Overall Length (Metric) | 45.72 meters |
| Engaged Thickness (Imperial) | 0.23 inches |
| Engaged Thickness (Metric) | 5.8 millimeters |
| Product Color | Black |
| Adhesive Color | Black |
| Stem Density | 400 stems per square inch |
| Fastener Type | Type 400 |
| Backing Material | Polyolefin |
| Primary Liner | White Polyolefin |
| Primary Liner Color | White |
| Primary Liner Thickness (Imperial) | 5 mils |
| Primary Liner Thickness (Metric) | 0.13 millimeters |
| Adhesive Type | Synthetic rubber-based pressure-sensitive |
| Maximum Operating Temperature (Fahrenheit) | 120°F |
| Maximum Operating Temperature (Celsius) | 49°C |
| Closure Life | 1000 cycles |
| Indoor/Outdoor Rating | Indoor use only |
| Flame Retardant | No |
| Units per Case | 2 rolls |
| Smallest Saleable Unit | Roll |
| Brand | 3M Dual Lock |
| Compatible Types | Type 170 and Type 250 stem densities |
| Applications | Interior Mirror & Fixture Attachment, Mounting & Trim Attachment, Upholstery & Seating Attachment |
| Industries | Construction, Electronics, Furniture, General Industrial, MRO, Packaging, Retail |
| Tensile Strength Advantage | Up to 5X stronger than typical hook-and-loop products |
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