Premium black loop fastener with high-tack rubber adhesive for thousands of reusable closures. 1 inch width, 50 yard roll, 3 rolls per case. Ideal for fabric securing, displays, and industrial applications.
The 3M™ Loop Fastener SJ3531 is a premium reclosable fastening solution designed for industrial and occupational applications requiring thousands of reliable openings and closures. This black woven nylon loop fastener features a high-tack rubber-based pressure-sensitive adhesive that bonds quickly to a variety of substrates including plastics like polyethylene and polypropylene. When paired with 3M™ Hook Fasteners, this fastener system provides exceptional durability and design flexibility, making it an ideal alternative to traditional closures such as zippers, screws, snaps, and hooks.
The fastener comes in convenient roll form with dimensions of 1 inch width and 50 yards length, packaged with 3 rolls per case. With a 3 mil (0.08mm) polyethylene film liner and an engaged thickness of 0.15 inches (3.8mm), this product delivers consistent performance across multiple applications. The woven loop backing is covered with thousands of soft, pliable napped loops that enable smooth engagement and disengagement cycles, supporting up to 5000 closure cycles for long-lasting performance.
The high-tack rubber adhesive system provides fast tack, good shear strength, and short dwell time, ensuring quick and secure attachment without requiring sewing, solvent activation, or bulk adhesive bonding. This fastener is best suited for indoor use with a maximum operating temperature of 90°F (32°C) and is commonly used in securing fabric to furniture cushions, point of purchase displays, signage, and general indoor industrial applications. The preshrunk construction of both hook and loop components ensures stability and flatness for professional-grade fastening performance.
Key Features
- Durable reclosable fastener supporting up to 5000 opening and closing cycles
- Woven nylon loop design with soft, pliable napped loops for smooth engagement
- High-tack rubber-based pressure-sensitive adhesive with fast tack and good shear strength
- Compatible with 3M Hook Fasteners for complete two-part fastening solution
- Bonds to various substrates including plastics, polyethylene, and polypropylene
- Fast product assembly without sewing, solvent activation, or bulk adhesive bonding
- Preshrunk construction ensures stability and flatness
- Indoor use rated with maximum operating temperature of 90°F (32°C)
- 3 mil polyethylene film liner for consistent performance
- Alternative to zippers, screws, snaps, and traditional fasteners
Technical Specifications
| Specification |
Value |
| Product Name | 3M Loop Fastener SJ3531 |
| Part Number | SJ3531 |
| 3M Product Number | SJ3531 |
| 3M ID | 7100084230 |
| UPC | 00021200656194 |
| Product Color | Black |
| Product Type | Loop |
| Product Form | Roll |
| Overall Width (Imperial) | 1 in |
| Overall Width (Metric) | 25.4 mm |
| Overall Length (Imperial) | 50 yd |
| Overall Length (Metric) | 45.72 m |
| Engaged Thickness (Imperial) | 0.15 in |
| Engaged Thickness (Metric) | 3.8 mm |
| Primary Liner Thickness (Imperial) | 3 mil |
| Primary Liner Thickness (Metric) | 0.08 mm |
| Closure Life (Cycles) | 5000 |
| Maximum Operating Temperature (Fahrenheit) | 90°F |
| Maximum Operating Temperature (Celsius) | 32°C |
| Units per Case | 3 |
| Smallest Saleable Unit | Roll |
| Adhesive Type | High-tack rubber-based pressure-sensitive |
| Backing Material | Woven nylon with napped loops |
| Liner Material | Polyethylene film |
| Brand | 3M |
| Industries | Construction, Electronics, Furniture, General Industrial, Medical, Military & Government, Specialty Vehicles, Transportation |
| Recommended Applications | Securing fabric to furniture cushions, point of purchase display and signage, indoor general industrial applications |
| Use Environment | Indoor use only |
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