3M 7010383950 Dual Lock Reclosable Fastener 1x50yd Black

Product Description

The 3M 7010383950 is a Dual Lock reclosable fastener designed for secure, repositionable attachment in both indoor and outdoor environments. The SJ3551CF configuration features a black polypropylene backing with 400 stems per square inch and an engaged thickness of 0.23 inches. An acrylic pressure-sensitive adhesive on the reverse side bonds directly to the substrate without mechanical fasteners. This fastener is rated for up to 1,000 open-and-close cycles, making it well suited for access panels, enclosures, and equipment covers where repeated entry is required. Licensed trades and maintenance professionals working on HVAC access doors, electrical enclosures, and control panel covers commonly specify this product.

This fastener is intended for bonding to metals including aluminum and stainless steel, glass, and high surface energy plastics such as acrylic, polycarbonate, and ABS. It also adheres to painted surfaces. The roll format — 1 inch wide by 50 yards long — gives installers the flexibility to cut lengths to fit a wide range of mounting applications. High-temperature performance is rated to 200 degrees F, making it suitable for use near heat-generating equipment in commercial and residential service environments.

Key Features

• 400 stems per square inch for strong mechanical engagement when mated
• Rated for 1,000 open-and-close cycles without significant loss of holding force
• Acrylic adhesive backing bonds to metals, glass, and high surface energy plastics
• High-temperature rating up to 200 degrees F for use near heat-generating equipment
• Engaged thickness of 0.23 inches for low-profile installation
• Indoor and outdoor rated for versatile service environments

Compatibility

Adheres to aluminum, stainless steel, glass, acrylic, polycarbonate, ABS plastics, and painted surfaces. Mates with corresponding 3M Dual Lock reclosable fastener strips of matching stem density for full closure engagement.

Installation Notes

Surface preparation is critical — clean and degrease all bonding surfaces before applying the adhesive-backed fastener. Apply firm, even pressure along the full length of the strip to ensure full adhesive contact. Allow adequate dwell time per standard pressure-sensitive adhesive practice before loading the joint. Cut strips to length using shears or a utility knife; avoid stretching the material during installation.

Technical Specifications

• Stem Density: 400 stems per square inch
• Engaged Thickness: 0.23 inches
• Closure Life: 1,000 cycles
• Maximum Temperature: 200 degrees F
• Width: 1 inch
• Length: 50 yards
• Color: Black
• Backing Material: Polypropylene
• Adhesive Type: Acrylic
• Weight: 5.5 pounds
• Unit of Measure: Roll

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010383950