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3M SJ3541 Dual Lock Black Reclosable Fasteners Acrylic Adhesive Type 400 Mushroom Head Buckle Tape
3M SJ3541 Dual Lock Black Reclosable Fasteners Acrylic Adhesive Type 400 Mushroom Head Buckle Tape
3M SJ3541 Dual Lock Black Reclosable Fasteners Acrylic Adhesive Type 400 Mushroom Head Buckle Tape
3M SJ3541 Dual Lock Black Reclosable Fasteners Acrylic Adhesive Type 400 Mushroom Head Buckle Tape
3M SJ3541 Dual Lock Black Reclosable Fasteners Acrylic Adhesive Type 400 Mushroom Head Buckle Tape
3M SJ3541 Dual Lock Black Reclosable Fasteners Acrylic Adhesive Type 400 Mushroom Head Buckle Tape
3M SJ3541 Dual Lock Black Reclosable Fasteners Acrylic Adhesive Type 400 Mushroom Head Buckle Tape
3M SJ3541 Dual Lock Black Reclosable Fasteners Acrylic Adhesive Type 400 Mushroom Head Buckle Tape
3M SJ3541 Dual Lock Black Reclosable Fasteners Acrylic Adhesive Type 400 Mushroom Head Buckle Tape
3M SJ3541 Dual Lock Black Reclosable Fasteners Acrylic Adhesive Type 400 Mushroom Head Buckle Tape

3M SJ3541 Dual Lock Black Reclosable Fasteners Acrylic Adhesive Type 400 Mushroom Head Buckle Tape

Product Name 3M™ Dual Lock™ Reclosable Fastener SJ3541
Color Black (fastener & adhesive)
Fastener Type Interlocking mushroom-shaped stems (Type 400)
Stem Density 400 stems/in² (62 stems/cm²)
Base Material Black polypropylene
Adhesive Type Synthetic rubber-based acrylic PSA
Release Liner White polyolefin
Engaged Thickness 5.7 mm (0.224 in)
Operating Temp -20°C to 49°C (-4°F to 120°F); short-term up to 70°C
Closure Cycles > 1,000 cycles (≥50% strength retention)
Tensile Strength 22 N/cm² (dynamic tensile engagement)
Bondable Substrates Metals, glass, ABS, PC, PP, PE, powder-coated surfaces, low/medium energy plastics
Standard Sizes 3/4", 1" wide × 50 yd (45.7 m) rolls; custom slitting available





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Dual Lock FastenerRubber AdhesiveBlack Reclosable Fastener3m Sj3541Type 400 FastenerHigh Strength Mushroom Tape
Product Description
3M™ Dual Lock™ SJ3541 is a high-strength, black reclosable fastener with 400 stems/in² interlocking mushroom stems, delivering up to 5× the tensile strength of standard hook-and-loop products. It features an audible snap closure for secure engagement verification and offers >1,000 reusable cycles.
Backed with a synthetic rubber adhesive, it bonds reliably to low surface energy plastics (PP/PE) and diverse substrates, making it ideal for indoor applications. A sleek alternative to screws/bolts, it enables hidden, clean mounting with repeated reusability. Perfect for access panels, interior signage, decorative trim, office partitions, and general industrial assembly.

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