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Reliable and Durable Fastening 3M SJ3540 Dual Lock Reclosable Fastener Tape for Access Panels
Reliable and Durable Fastening 3M SJ3540 Dual Lock Reclosable Fastener Tape for Access Panels
Reliable and Durable Fastening 3M SJ3540 Dual Lock Reclosable Fastener Tape for Access Panels
Reliable and Durable Fastening 3M SJ3540 Dual Lock Reclosable Fastener Tape for Access Panels
Reliable and Durable Fastening 3M SJ3540 Dual Lock Reclosable Fastener Tape for Access Panels
Reliable and Durable Fastening 3M SJ3540 Dual Lock Reclosable Fastener Tape for Access Panels
Reliable and Durable Fastening 3M SJ3540 Dual Lock Reclosable Fastener Tape for Access Panels
Reliable and Durable Fastening 3M SJ3540 Dual Lock Reclosable Fastener Tape for Access Panels
Reliable and Durable Fastening 3M SJ3540 Dual Lock Reclosable Fastener Tape for Access Panels
Reliable and Durable Fastening 3M SJ3540 Dual Lock Reclosable Fastener Tape for Access Panels
Reliable and Durable Fastening 3M SJ3540 Dual Lock Reclosable Fastener Tape for Access Panels
Reliable and Durable Fastening 3M SJ3540 Dual Lock Reclosable Fastener Tape for Access Panels

Reliable and Durable Fastening 3M SJ3540 Dual Lock Reclosable Fastener Tape for Access Panels

Product Name 3M™ Dual Lock™ Reclosable Fastener SJ3540
Color Black (fastener & adhesive)
Fastener Type Interlocking mushroom-shaped stems (Type 250)
Stem Density 250 stems/in² (38.75 stems/cm²)
Base/Backing Material Black polypropylene
Adhesive Type Synthetic rubber pressure-sensitive adhesive (PE foam)
Release Liner White polyolefin
Engaged Thickness 5.8 mm (0.23 in)
Total Thickness Approx. 3.5 mm
Closure Cycle Life > 1,000 cycles (50% strength retention)
Maximum Operating Temperature 49 °C (120 °F) (long-term, indoor only)
Key Features High tensile strength, audible snap, reusability, bonds to low surface energy plastics
Compatible Substrates Metals, glass, ABS, polycarbonate, polyethylene (PE), polypropylene (PP), low/medium surface energy plastics
Standard Sizes 12.7 mm, 25.4 mm, 50.8 mm × 45.7 m rolls


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Reclosable FastenerBlack FastenerDual Lock FastenerType 250 Mushroom Tape3m Sj3540Rubber Adhesive
Product Description
3M™ Dual Lock™ SJ3540 is a black, heavy-duty reclosable fastener with 250 stems/in² Type 250 mushroom stems for strong, audible snap closure.
It uses a synthetic rubber PE foam adhesive engineered to bond reliably to low surface energy plastics like PE and PP, as well as metals, glass, and standard plastics
This fastener is durable, reusable, and ideal for indoor applications requiring repeated access. It replaces screws/bolts for hidden, clean mounting, with >1,000 open/close cycles. Best suited for interior trim, signage, electronics assembly, POP displays, and general industrial mounting.

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