3M SJ3550 is a black colored Dual Lock Reclosable Fastener that can be used for both indoor and outdoor applications. 


This material is designed to replace fasteners, screws, snaps, and bolts and is great for applications that require access or repositioning. 

3M Dual Lock is a fastener system that when pressed together, plastic ‘mushroom stems’ interlock creating an audible snap. 3M SJ3550 is a ‘type 250’ fastener meaning its surface has approximately 250 stems per square inch. This type performs up to five times stronger than typical Hook and Loop fasteners. This material is used in many industries including electronics, automotive, transportation, specialty vehicle, and general industrial.

3M SJ3550 Reclosable Fastener Attachment Applications:

  • Window and Door Trim Panels
  • Interior Trim
  • Accessories and Equipment
  • Vibration and Sound Dampening Control
  • Much More

3M SJ3550 Dual Lock has a pressure sensitive high bond VHB acrylic adhesive backing. It has a maximum operating temperature of 200 degrees Fahrenheit and can be opened and closed up to 1000 times for repeated access or repositioning. 3M SJ3550 Dual Lock resists harsh wet and dry as well as hot and cold environmental cycles.

Converting 3M SJ3550

3M SJ3550 can be die cut and converted into custom formats depending on your needs.

SlittingStrouse can slit rolls of 3M Dual Lock Reclosable Fasteners to custom widths. This provides you fastener tape in the exact width you need for your task at hand. No excess or waste and no more using rolls that are too large and bulky or too small to get the job done. 

Die CuttingThis is the process of cutting a wide roll of 3M Dual Lock into a custom shape or usable part for your process. Parts can be cut into different formats to fit seamlessly into your process.

Individual pieces3M Dual Lock can be laminated with liner on the adhesive leaving no exposed adhesive. This means that when parts are die cut they are provided as individual pieces that can be placed inside a bag.   

Sheeted Parts – Some assembly processes require multiple shapes or parts of the same material. This is where sheeted parts come in handy. Multiple parts can be cut onto a single sheet ensuring that your employees will use all of the required parts during assembly. This reduces error in your process as well as the potential for product failure.

Die Cut Parts on a Roll – This is our most popular format for providing die cuts. Custom cut parts can be provided on a liner in the form of a rolled good. This allows for hundreds or thousands of parts to fit on a single roll. This makes application of die cut parts easy and efficient as parts can be removed from the roll and the next part is ready to be peeled and placed.

Tabs or Extended LinersDie cut solutions are great for hand assembly or automated processes but sometimes removing the backing from an adhesive die cut can be difficult. Strouse simplifies this process by adding a tab to the part or extended liners that make it easy to remove the liner and place the adhesive. Liners can also be split backed saving your assembly team the frustration of removing thin liners while saving you time and money in the process.

Other Popular 3M Dual Lock Fasteners:

Strouse is a 3M Preferred Converter and can source dual lock tape from 3M at discounts due to the large orders we often place. We have over 75,000 rolls of material and more than 2,000 individual materials in stock at any given time. If you're looking for a specific material, just ask our engineers, but these are some of the more popular:


Take a Look at Hook and Loop Materials as Well!

Strouse die cuts and converts reclosable fasteners and flexible materials to solve many different adhesive applications. Our diverse manufacturing capability allows us to provide you the material you need in the exact size, shape, and format required for your design.