The 3M SJ3558 Dual Lock Reclosable Fastener is a versatile fastening solution consisting of interlocking mushroom-shaped stems. These stems provide a strong, reliable, and reclosable attachment that can replace screws, rivets, and other mechanical fasteners. The SJ3558 is a black polyolefin tape with a clear acrylic adhesive on the back, allowing it to bond to a wide variety of surfaces, including metals, glass, and plastics.

Applications

• Attaching access panels in electronic equipment
• Securing graphic panels and signage
• Mounting interior components in vehicles (e.g., headliners, trim)
• Reusable packaging closures
• Point-of-purchase displays

Features

• Reclosable fastener with interlocking mushroom-shaped stems
• Clear acrylic adhesive for bonding to various surfaces
• Black polyolefin carrier
• High tensile strength
• Vibration dampening

Benefits

• Provides a strong and reliable attachment
• Allows for easy access and reclosure
• Reduces the need for mechanical fasteners
• Provides a clean, aesthetically pleasing appearance
• Dampens vibration and reduces noise

Additional Details

The SJ3558 offers a strong, yet removable, bond. The interlocking mushroom-shaped stems snap together, creating a secure connection that can withstand significant force. To separate, simply peel apart. The acrylic adhesive provides excellent adhesion to a wide range of materials, including high and medium surface energy plastics, metals, glass and painted surfaces. Surface preparation is important for optimal bonding. Clean surfaces with a solvent such as isopropyl alcohol or heptane before applying the fastener. The recommended application temperature range is typically between 70°F (21°C) and 100°F (38°C). The fastener can withstand operating temperatures from -20°F (-29°C) to 158°F (70°C). The stem density is a critical factor in determining the overall strength of the fastener. Higher stem densities generally provide greater tensile strength. The SJ3558 is often used in applications where frequent access is required or where a clean, fastener-free appearance is desired. It is also suitable for applications where vibration damping is beneficial.