3M 7010373340 Dual Lock Reclosable Fastener SJ3541 Black

Product Description

The 3M 7010373340 is a reclosable fastener strip sold under the Dual Lock SJ3541 product line. It features a rubber-based pressure-sensitive adhesive backing bonded to a black polypropylene mushroom-stem fastener surface. The stem density is 400 stems per square inch, providing a firm mechanical closure rated for up to 1,000 open-and-close cycles. Engaged thickness measures 0.23 inches. The roll format — 6 inches wide by 50 yards long — makes it well suited for high-volume panel attachment, equipment mounting, and reclosable assembly applications where a traditional hook-and-loop fastener is not adequate.

This fastener is intended for indoor use only and is rated for low-temperature performance with a maximum temperature resistance of 120 degrees F. It bonds to a wide range of substrates including acrylics, polycarbonates, ABS plastics, powder-coated painted surfaces, and low-surface-energy materials such as polypropylene and polyethylene. Typical applications include panel retention, display mounting, and equipment enclosure fastening in light industrial and commercial interior environments. Installation requires clean, dry surfaces for proper adhesive transfer.

Key Features

• 400 stems per square inch for a firm, audible snap closure
• Rubber-based adhesive bonds to plastics, powder-coated paint, and low-surface-energy materials
• Rated for 1,000 closure cycles without significant loss of holding force
• 0.23 inch engaged thickness for low-profile panel attachment
• Black polypropylene construction resists moisture and light chemical exposure
• Large-format roll — 6 inches x 50 yards — reduces splicing in high-volume applications

Compatibility

Designed for bonding to acrylic, polycarbonate, ABS, powder-coated painted surfaces, polypropylene, and polyethylene substrates in indoor environments. Not recommended for outdoor, high-humidity, or high-temperature applications above 120 degrees F.

Installation Notes

Surface preparation is critical — clean all mating surfaces with isopropyl alcohol and allow to dry completely before applying the adhesive-backed fastener. Apply firm, even pressure across the full strip length to ensure full adhesive contact. This product is intended for indoor use only; do not install in direct sunlight, outdoor environments, or areas subject to sustained temperatures above 120 degrees F. Allow a minimum dwell time after application before loading the joint.

Technical Specifications

• Stem Density: 400 stems per square inch
• Engaged Thickness: 0.23 inches
• Closure Life: 1,000 cycles
• Maximum Temperature Resistance: 120 degrees F
• Roll Width: 6 inches
• Roll Length: 50 yards
• Color: Black
• Backing Material: Polypropylene
• Adhesive Type: Rubber-based pressure-sensitive
• Environment: Indoor use only
• Unit of Measure: Roll
• Weight: 22 pounds

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010373340