3M

3M SJ3542 Black Dual Lock Reclosable Fastener

SJ3542

3M™ Dual Lock™ Reclosable Fastener SJ3542 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) which bonds to a variety of substrates including many plastics and low surface energy materials.

Black, interlocking mushroom-shaped heads provide strong, reliable and durable fastening that can be opened and closed multiple times
170 stem density per square inch; mates with Type 250 and Type 400 stem densities to provide different strength combinations
Synthetic rubber-based adhesive bonds well to a variety of substrates including low surface energy plastics such as polyethylene and polypropylene

Color: Black

Liner Material: White Silicone Treated Polyolefin

Backing/Carrier Material: Polypropylene

Adhesive Type: Synthetic Rubber

TotalThickness: 138 mil

Overview
Customize
Features
Specifications
Compliance
Resources

Overview

Consult

Specify a finalized design or create a new one from scratch with our experienced converting experts.

Design

Pair our material sampling library with our precision converting capabilities to optimize and validate a prototype.

Produce

Rely on our top-tier suppliers, strict quality controls, and hands-on help to ensure your product's effectiveness throughout its lifecycle.

Customize

Customize This Material

Our wide range of converting capabilities allow us to take this material and transform it into the right width, length, shape or fabricated part to not only achieve ideal integration into your end use, but also optimize how you apply the material in your application. Our converting equipment paired with our expert engineering team will help you create the exact custom solution for your unique requirements.

To learn more about the most common converting services we offer, or to contact our team to start discussing your solution, please utilize the below links:

Tape Slitting

Die-Cutting

Custom Part Fabrication

Prototyping

Custom Length Rolls

Features

Black, interlocking mushroom-shaped heads provide strong, reliable and durable fastening that can be opened and closed multiple times
170 stem density per square inch; mates with Type 250 and Type 400 stem densities to provide different strength combinations
Synthetic rubber-based adhesive bonds well to a variety of substrates including low surface energy plastics such as polyethylene and polypropylene
Strong fastener secures with an audible snap, verifying closure
An alternative to screws and bolts, hidden fastener provides a snug fit and smooth aesthetic appearance
Features good temperature resistance of 120°F
Best suited for indoor use
Adhesive features quick stick and a short dwell time

Specifications

Color	Black
Backing/Carrier Material	Polypropylene
Adhesive Type	Synthetic Rubber
Total Thickness	138 mil
Liner Material	White Silicone Treated Polyolefin
Liner Thickness	5 mil
Maximum Temperature Performance	140°F
Compatible Parts	SJ3540, SJ3541

Compliance

We value the importance of up to date an accurate regulatory information on the products we work with. For the most current Compliance and Regulatory information on your product of interest, please contact our experts for assistance.

Resources

Technical Data Sheet

3M™ Dual Lock Reclosable Fastener SJ3542 is a clear, easy-to-use alternative to traditional fasteners like screws, nuts, and bolts.

Engineered for durable, reclosable fastening that can be opened and closed multiple times, it bonds securely to a wide range of substrates, including many plastics and low surface energy materials.

Featuring interlocking mushroom-shaped heads at a density of 170 stems per square inch, SJ3542 delivers up to 5 times the tensile strength of typical hook-and-loop fasteners.

Constructed with a synthetic rubber-based black PE foam tape and protected by a removable film liner, it offers quick stick pressure-sensitive adhesive with a short dwell time for fast, hassle-free installation.

No drilling, screwing, or sewing tools are needed, making 3M™ Dual Lock SJ3542 ideal for industrial, automotive, electronics, and general-purpose fastening applications.

Access panels
Interior signage
Decorative trim
Office partitions
Product IDs

3M