3M 7100016686 Dual Lock Reclosable Fastener SJ3540 Black

Product Description

The 3M 7100016686 is the Dual Lock Reclosable Fastener SJ3540, a black polypropylene interlocking fastener tape with a rubber-based pressure-sensitive adhesive backing. It delivers 250 stems per square inch and an engaged thickness of 0.23 inches, producing a secure mechanical closure rated for up to 1,000 open-and-close cycles. The roll measures 3/4 inch wide by 50 yards long and weighs 2.75 pounds. Designed for indoor applications, it handles temperatures up to 120 degrees F. Technicians and installers use this tape to create tool-free, reclosable bonds on panels, covers, and assemblies where conventional fasteners are impractical.

This fastener tape is suited for residential and light commercial indoor installations where a clean, removable, and repeatable attachment is required. It bonds reliably to many rigid plastics including acrylic, polycarbonate, and ABS, as well as powder-coated paint surfaces and low-surface-energy materials such as polypropylene and polyethylene. Common applications include securing access panels, wire management covers, HVAC cabinet liners, and equipment enclosures where repeated service access is expected.

Key Features

• 250 stems per square inch for consistent, repeatable mechanical closure
• Rated for 1,000 closure cycles without significant performance loss
• 0.23-inch engaged thickness provides positive tactile engagement
• Rubber-based adhesive backing adheres to a wide range of plastic and painted surfaces
• Low-surface-energy compatibility covers polypropylene and polyethylene substrates
• Indoor-rated with temperature resistance up to 120 degrees F

Compatibility

Bonds to acrylic, polycarbonate, ABS, powder-coated paints, polypropylene, and polyethylene surfaces. Designed for indoor use only. Confirm surface compatibility with a test bond before full installation on critical assemblies.

Installation Notes

Surface preparation is critical — clean and dry all bonding surfaces thoroughly before applying the adhesive backing, as oils, dust, and moisture will reduce adhesion. Apply firm, even pressure along the full length of the tape after positioning to maximize initial bond strength. Because this is an indoor-only product, do not install in locations exposed to direct moisture, outdoor conditions, or temperatures above 120 degrees F. No special tools are required, but allow adequate dwell time after application before loading the joint.

Technical Specifications

• Stem Density: 250 stems per square inch
• Engaged Thickness: 0.23 inches
• Closure Life: 1,000 cycles
• Width: 3/4 inch
• Length: 50 yards
• Color: Black
• Adhesive Type: Rubber-based
• Backing Material: Polypropylene
• Temperature Resistance: Up to 120 degrees F
• Application Environment: Indoor use only
• Weight: 2.75 pounds
• Unit of Measure: Roll

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100016686