3M 7100091141 Dual Lock Reclosable Fastener SJ3542 Black

Product Description

The 3M 7100091141 is the Dual Lock Reclosable Fastener SJ3542, a strip-style mechanical fastener used to create a strong, reopenable bond between two mating surfaces. Each strip features a polypropylene mushroom-stem profile backed by a rubber-based pressure-sensitive adhesive. The stem density is 400 stems per square inch, and the engaged thickness when mated is 0.23 inches. Rated for up to 1,000 open-and-close cycles, this fastener is designed for indoor applications where a durable, tool-free reclosable attachment is required. It ships as a 2-inch-wide roll, 50 yards in length.

This fastener is suited for residential and commercial interior applications where mechanical fastening, panel attachment, or component mounting is needed without hardware. It bonds well to a range of substrates including acrylic, polycarbonate, ABS, powder-coated paints, and low surface energy materials such as polypropylene and polyethylene. Typical use cases include securing access panels, mounting control components, organizing cable runs, and attaching lightweight equipment enclosures in HVAC, electrical, and general trade environments.

Key Features

• 400 stems per square inch for firm mechanical engagement
• Rubber-based adhesive backing bonds to plastics, powder-coated surfaces, and low surface energy materials
• Rated for 1,000 open-and-close cycles
• 0.23-inch engaged thickness when mated
• Temperature resistance up to 120 degrees F
• 2-inch-wide continuous roll, 50 yards per roll

Compatibility

Compatible with acrylic, polycarbonate, ABS, powder-coated paints, polypropylene, and polyethylene surfaces. Designed for indoor use only.

Installation Notes

Clean and dry all bonding surfaces thoroughly before applying the adhesive backing; contaminants and moisture will reduce adhesion. Apply firm, even pressure along the full length of the strip after placement to ensure full adhesive contact. This fastener is rated for indoor use only and should not be exposed to outdoor conditions or temperatures above 120 degrees F. Cut to length with standard utility shears or a sharp blade.