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Black 3M Dual Lock reclosable fastener roll with acrylic adhesive backing

3M

3M Dual Lock Type 400 Reclosable Fastener SJ3551 Black Acrylic Adhesive 2 in x 10 ft

SKU CH-3WFF-ZB7ZB

Black reclosable fastener roll with 400 stems per square inch and acrylic adhesive for metals, glass and high-energy plastics

  • TypeAdhesive Tapes
  • ColorBlack
  • Reclosable up to 1,000 cycles for repeated access
  • 400 stems per square inch deliver 5× hook-and-loop strength
  • Mushroom stems interlock with Type 170, 250 or 400 mates
  • Acrylic adhesive bonds metal, glass and high-energy plastics
  • 23 in engaged thickness keeps profile low

3M Dual Lock SJ3551 reclosable fastener

This black polypropylene fastener uses 400 mushroom-shaped stems per square inch to create a reusable bond that is five times stronger than standard hook-and-loop. It engages at a thickness of .23 inches and is rated for 1000 closure cycles, making it suitable for repeated opening and closing of panels or components.

Acrylic adhesive bonds metals glass plastics

The general-purpose acrylic pressure-sensitive adhesive on the backing adheres to metals, glass, and medium-to-high surface energy plastics and paint. It can replace screws, rivets, clips, snaps and bolts where access or repositioning is needed, and the 10 foot roll lets you cut custom lengths for each application.

Mates with type 170 250 400 fasteners

Type 400 stem density allows mating with type 170, 250 or 400 counterparts; the higher the combined number the greater the closure strength. Some shipments arrive as SJ3551CF with a clear release liner instead of a white one, but specifications remain identical. Buyers who need a lower-profile permanent bond or a different adhesive chemistry should consider other fastening methods.

Highlights

  • Reclosable up to 1,000 cycles for repeated access
  • 400 stems per square inch deliver 5× hook-and-loop strength
  • Mushroom stems interlock with Type 170, 250 or 400 mates
  • Acrylic adhesive bonds metal, glass and high-energy plastics
  • 23 in engaged thickness keeps profile low

Specifications

TypeAdhesive Tapes
ColorBlack

Questions about this item

What does the 400 stem density mean for closure strength and mating options?

The 400 stems per square inch provide 5X greater closure strength than hook and loop, and can mate with type 170, 250 or 400 fasteners for adjustable holding power.

What surface preparation and carrier material should I plan for when mounting this 2-inch wide roll?

The polypropylene carrier uses a general-purpose acrylic adhesive designed for metals, glass and medium-to-high surface energy plastics; clean surfaces thoroughly before applying the 2-inch wide tape.

How do I apply the reclosable fastener correctly, and what common step causes failures?

Press both mated sides firmly together to engage the mushroom stems; the step often missed is applying sufficient pressure across the full 10-foot length to activate the pressure-sensitive adhesive on both surfaces.

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