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Black polypropylene fastener roll with acrylic adhesive backing and polycoated Kraft liner

3M

3M Dual Lock Low Profile Reclosable Fastener SJ4575 Black 5/8 in x 50 yds

SKU CH-RW7N-XZ398

A reclosable adhesive fastener roll that replaces screws and clips for removable mounting on metal, wood and low-surface-energy plastics

  • TypeAdhesive Tapes
  • ColorBlack
  • Thin 65-mil profile fits tight gaps
  • Acrylic 300 LSE adhesive bonds low-energy plastics
  • Reclosable mushroom stems replace screws and rivets
  • Single-sided design cuts from one 50-yard roll
  • 86# polycoated Kraft liner protects adhesive until use

What it is

3M SJ4575 Dual Lock Low Profile Reclosable Fastener is a black adhesive tape on a 50 yard roll. It uses interlocking mushroom-shaped stems that snap together to replace screws, rivets or hook-and-loop in applications needing repeated access. The acrylic 300 LSE adhesive bonds to polypropylene, polyethylene, metal and finished wood.

Thermals noise power

This fastener has no electrical or thermal characteristics. It produces no noise and draws no power. Performance depends on surface preparation and the static load applied to the bonded area.

Deciding spec

The stems are 65 mils thick including carrier and adhesive, with a 6.5 mil release liner. 3M typically recommends four square inches of fastener per pound of static load. Buyers needing a thinner profile or a different adhesive chemistry should look elsewhere.

Highlights

  • Thin 65-mil profile fits tight gaps
  • Acrylic 300 LSE adhesive bonds low-energy plastics
  • Reclosable mushroom stems replace screws and rivets
  • Single-sided design cuts from one 50-yard roll
  • 86# polycoated Kraft liner protects adhesive until use

Specifications

TypeAdhesive Tapes
ColorBlack

Questions about this item

How do I apply the 3M SJ4575 tape to a surface, and what step is often missed?

Clean the surface thoroughly with isopropyl alcohol, let it dry completely, then press the adhesive side firmly. The step often missed is allowing full adhesive cure time before applying any load to the fastener.

Will the acrylic adhesive on the 3M SJ4575 need replacement over time?

The 300 LSE acrylic adhesive is designed for permanent bonding to substrates like polypropylene, metal, and finished wood. The reclosable stems withstand repeated opening and closing, but the tape itself stays in place unless the bond fails.

What load limit applies first when using 3M SJ4575 continuously?

3M recommends 4 square inches of fastener per pound of static load for low profile Dual Lock. Exceeding this ratio is the first limit that causes the stems to disengage or the adhesive bond to creep under sustained weight.

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