3M Dual Lock Reclosable Fastener

3M SJ3441 Duallock Tape Reclosable Fastener 400 black 1‘’*50yd

3M™ Dual Lock™ Reclosable Fasteners consist of a continuous polyolefin film backing with mushroom shaped stems protruding up from the backing. When pressed together these mushroom shaped stems interlock to provide you with a strong reliable attachment.

Product Specification:
  • Name : 3M SJ3441 Duallock Tape Reclosable Fastener 400 black 1‘’*50yd
  • Size : 1''*50y
  • Color : black
  • Material : Polyolefin blend
  • Adhesive Type : None
  • Thickness Tolerance : ± 10 %
  • Stems : 400 Stems/in²
  • Long :
Product Details



  • Black, interlocking mushroom-shaped heads (400 stem density per square inch) provide strong, reliable and durable fastening that can be opened and closed multiple times
  • Mates with Type 170 or Type 250 stem densities to provide different strength combinations
  • Non-adhesive back for attachment with hot melt, epoxy or liquid adhesives
  • Strong fastener secures with an audible snap, verifying closure
  • An alternative to screws and bolts, this hidden fastener provides a snug fit and smooth aesthetic appearance
  • Features good temperature resistance of 220°F (104°C), though temperature resistance may change based on adhesive used
  • Suited for indoor or outdoor use

3M™ Dual Lock™ Reclosable Fastener SJ3441 is the easy and clear alternative to traditional fastening methods, such as screws, nuts or bolts. It is designed to deliver a durable, reclosable fastening solution, which can be opened and closed multiple times. This black fastener is most commonly attached by applying hot melt, epoxy or liquid adhesive.


About us 

Our Company was founded in 2015, we are focus on Tape Die cutting, rewinding, slitting, bonding and other precision processing.We can produce the most satisfying products for our customers according to the requirements of customers' product specifications or drawings.

The company has always been adhering to the "firstclass quality to gain market trust, firstclass senvices to win customer satisfaction" business philosophy, always adhere to the "peopleoriented, customer first, quality first, reasonable price" the management policy.Welcome friends, business customers come to negotiate business, a total exhibition!

About Package 

Standard packing: Inner packaging poly bags, and then into cartons or as your requirement.

About the shipment:

1. All orders are dispatched within 1~2 weeks after confirmation of order.

2.Transportation modes EMS,TNT,DHL,UPS,FEDEX are available.

3.Tracking Number will be sent to you via e-mail after your order has been shipped.


1: What is the MOQ?

A: It depends on the size and materials you want. If you use the materials that are our common stock, any small quantity is acceptable.

Q2: Can we get sample freely? How long will it take to get a sample? What about the delivery cost?

A: Yes, we can arrange sample before you place a full order. We can provide A4 sheet or width less than 10mm rolls samples for free by express collect. Sample lead time is within 7 days.

Q3: How long will it take for a full order?

A: Our vast inventory enables us to begin the converting process immediately. In many cases, your order will be shipped almost immediately after it is placed.


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Technical Support: Magic Lamp