3M™ Dual Lock™ SJ3560 Reclosable Fastener

3M™ Dual Lock™ SJ3560 Reclosable Fastener, High-Performance Removable Attachment

The 3M™ Dual Lock™ SJ3560 is a reclosable fastener tape that replaces screws and rivets without leaving marks.

Its high-performance mechanical attachment features up to 350 stems/cm², providing a strong hold and clean removal on demand.

Ideal for industrial assembly, panel mounting, or component fastening, it adapts to most smooth surfaces.

Available at Dagobert Industrie, an official 3M distributor.

What is 3M™ Dual Lock™ SJ3560 reclosable tape?

The 3M™ Dual Lock™ SJ3560 is a removable stem fastener tape designed to join two surfaces without screws, permanent glue, or tools.

It comes as a flexible black polypropylene tape with a high-performance acrylic adhesive on the back. It attaches to most clean, smooth surfaces in seconds.

Dual Lock technology: the mushroom head interlocking principle

The principle is simple: each side of the tape is covered with mushroom-shaped stems. When two strips are pressed together, the heads mechanically snap into one another.

This mechanism produces a firm, audible snap upon assembly. Unlike traditional Velcro (hook and loop), both sides of the Dual Lock are identical, a single part number suffices for both sides.

The SJ3560 features a density of 400 stems per dm², positioning it as the high-strength version of the range. It supports significant tensile loads while remaining removable by hand.

Typical areas of application:

• Fastening panels and interior trim (automotive, transport)
• Mounting electronic housings and displays
• Assembly of equipment requiring regular access for maintenance
• Replacing mechanical fasteners on fragile surfaces

Product	Stem density / dm²	Tensile strength	Typical usage
3M™ Dual Lock™ SJ3560	400	High	Industrial fasteners, frequent maintenance
3M™ Dual Lock™ SJ3550	250	Medium	Displays, light signage
Industrial Velcro® standard	(hook/loop)	Low to medium	General use, textiles, light loads

Technical specifications of the 3M™ Dual Lock™ SJ3560

The 3M™ Dual Lock™ SJ3560 is a reclosable stem fastener tape designed for repeated removable attachments without loss of adhesion.

It relies on a system of polypropylene molded mushrooms that interlock under pressure. No need for two different sides: each strip attaches to itself or another SJ3560 strip.

The stem density is 250 stems/inch², positioning it in the high-strength range of the Dual Lock family. It supports high loads while remaining easily detachable by hand.

• Backing: closed-cell acrylic foam
• Adhesive: high-performance acrylic
• Operating temperature: -40 °C to +70 °C
• Tensile strength: up to 3.5 kg/cm²
• Color: black
• Total thickness (including stems): approximately 5.5 mm

The adhesive back allows for direct application onto smooth, painted, or metallic surfaces. Surface preparation remains crucial to maximize hold.

Product	Stem density (stems/in²)	Backing	Max Temp	Typical usage
3M™ Dual Lock™ SJ3560	250	Acrylic foam	+70 °C	Industrial removable fastener, panels, housings
3M™ Dual Lock™ SJ3550	170	Acrylic foam	+70 °C	Light to medium fastening, general use
3M™ Dual Lock™ SJ3870	400	Polyester film	+120 °C	High-temperature environments, automotive
Industrial Velcro® (hook/loop)	-	Woven fabric	+60 °C	Light fastening, textiles, everyday use

Unlike traditional Velcro®, the Dual Lock SJ3560 does not trap dust in its fibers and maintains its mechanical performance after hundreds of opening/closing cycles.

Applications and areas of use for the SJ3560

The 3M™ Dual Lock™ SJ3560 is designed for repeatable removable fastenings in demanding environments. It advantageously replaces screws, rivets, or traditional Velcro where quick access is required.

Its rigid mushroom profile (density 400 stems/in²) generates a firm mechanical hold. Removal remains simple and clean, without leaving residue or damaging surfaces.

It is particularly well-suited for light industrial assemblies: fastening signage, electronic housings, machine guards, or identification plates.

In the automotive industry, it is used to hold interior trim, trunk covers, or dashboard moldings, with quick removal for maintenance.

The display and visual communication sector uses it extensively: fastening point-of-sale displays, presentation stands, or temporary signage on rigid surfaces.

It is also suitable for electronic and onboard applications: attaching cards, cable bundles, or small housings on chassis or racks.

Product	Density (stems/in²)	Shear strength	Typical usage
3M™ Dual Lock™ SJ3560	400	High	Industrial fastening, display, automotive
3M™ Dual Lock™ SJ3550	250	Moderate	Light assemblies, general use
Industrial Velcro® (type PS14)	-	Low to moderate	Textile closures, flexible fasteners
3M™ Dual Lock™ SJ3570	170	Very high (combined 400+170)	Heavy loads, strong vibrations

At Dagobert Industrie, we recommend pairing two SJ3560 strips face-to-face for the best fastening performance, or combining the SJ3560 with the SJ3570 for applications subject to high vibrations.

Comparison: SJ3560 against other 3M™ Dual Lock™ range references

The 3M™ Dual Lock™ range includes several references. Each meets a different level of requirement in terms of strength, stem density, and application.

The SJ3560 is positioned as a versatile intermediate reference. It offers a good balance between fastening strength and ease of repeated opening, suitable for common industrial applications.

Comparative table of main Dual Lock™ references

Reference	Stem density (stems/cm²)	Engagement force	Backing type	Typical applications
SJ3550	39 stems/cm²	Low to moderate	Acrylic foam	Light fastening, signage
SJ3560 (this product)	57 stems/cm²	Moderate to high	Acrylic foam	Industrial equipment, housing attachment, removable assembly
SJ3570	170 stems/cm²	Very high	Acrylic foam	Fasteners subject to high vibrations, demanding applications
SJ3541	57 stems/cm²	Moderate to high	No adhesive backing (smooth back)	Mechanical fastening via rivet or screw

The SJ3560 distinguishes itself from the SJ3550 by a higher stem density, resulting in a more robust hold. It remains easier to open than the SJ3570, which is ideal when repeated removable fastening is a priority.

For environments subject to intense vibrations or heavy loads, the SJ3570 takes over. The SJ3560 covers the majority of standard industrial needs without over-engineering the solution.

3M™, the benchmark manufacturer in industrial adhesives: why trust the Dual Lock™ range?

3M™ is a world leader in industrial bonding solutions. Its products have been used in aerospace, automotive, electronics, and construction for decades.

The Dual Lock™ range is an innovation unique to 3M™. Unlike traditional Velcro (hooks/loops), the Dual Lock™ system relies on two identical strips with rigid mushrooms that interlock with each other.

Result: a high-strength removable fastener, reusable hundreds of times, with no significant performance degradation.

Dagobert Industrie, official 3M™ distributor in France

At Dagobert Industrie, we are official distributors of 3M™ products. This guarantees product authenticity, traceability, and compliance with original technical specifications.

You thus benefit from certified 3M™ quality, without compromise on the performance advertised by the manufacturer.

Product	Manufacturer	System	Shear strength	Reusable	Typical usage
Dual Lock™ SJ3560	3M™	Mushroom / mushroom	Very high	Yes (hundreds of cycles)	Industrial fastener, panels, housings
Industrial Velcro®	Velcro®	Hooks / loops	Moderate	Yes (limited cycles)	Textile, light fittings
Dual Lock™ SJ3550	3M™	Mushroom / mushroom	High	Yes	Light to medium fastening
Scotch-Mate™ SJ3418	3M™	Hooks / loops	Moderate	Yes	Light applications, office supplies

The SJ3560 stands out for its high stem density (400 stems/cm²), which gives it a superior hold compared to other references in the Dual Lock™ range.

FAQ - 3M™ Dual Lock™ SJ3560 stem fastener tape

1. What is the difference between Dual Lock™ SJ3560 and traditional Velcro?

The Dual Lock™ SJ3560 uses rigid polypropylene stems that interlock with each other. Unlike Velcro (hook/loop), both sides are identical: each strip attaches to any other Dual Lock™ strip.

2. What holding force does the SJ3560 provide?

The SJ3560 belongs to the 250 stems/inch² density category, giving it a high engagement force. It supports heavy loads under perpendicular tension while remaining manually detachable without tools.

3. To which surfaces does the SJ3560 adhere?

It is equipped with a high-performance acrylic adhesive that bonds to clean, smooth metal, plastic, glass, and painted surfaces. Porous, dusty, or oily surfaces reduce adhesion: pre-cleaning with isopropanol is recommended.

4. Is the SJ3560 resistant to heat and humidity?

The polypropylene of the stems withstands temperatures up to approximately 70 °C in continuous use. The acrylic adhesive offers good humidity resistance. This product is therefore suitable for moderately demanding industrial environments, but not for prolonged exposure to extreme heat.

5. How many opening/closing cycles can the SJ3560 support?

The Dual Lock™ SJ3560 is designed for hundreds of engagement/disengagement cycles without significant loss of performance. This is a major advantage over permanent fastening solutions like screws or rivets, which do not allow for repeated dismantling.

6. Is the SJ3560 compatible with other 3M Dual Lock™ references?

Yes. All 3M Dual Lock™ references (SJ3550, SJ3560, SJ3570...) are inter-compatible. Stem density may vary from one reference to another, which influences the engagement force, but the interlocking works in all cases.