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Black polypropylene tape roll with mushroom-shaped fasteners, acrylic adhesive backing, 1 inch wide, 50 yards long

3M

3M Dual Lock Low Profile Reclosable Fastener SJ4575 Black 1 in x 50 yds

SKU CH-TDNY-E0XX8

A low-profile reclosable fastener on a 50-yard roll that bonds to polypropylene, polyethylene, metal and finished wood with 300 LSE acrylic adhesive

  • TypeAdhesive Tapes
  • ColorBlack
  • Low-profile 65 mil thickness enables discrete mounting
  • 300 LSE acrylic adhesive bonds polypropylene, polyethylene, metal and finished wood
  • Reclosable mushroom stems replace screws, rivets and hook-and-loop fasteners
  • Single roll design cuts in half to create two mating strips
  • 86# polycoated Kraft liner protects adhesive until installation

Thin reclosable fastener roll

3M SJ4575 Dual Lock Low Profile fasteners replace screws, clips, rivets and hook-and-loop tape where thin, repositionable attachment is needed. The 1-inch by 50-yard roll of black polypropylene carrier carries 300 LSE acrylic adhesive on an 86# polycoated Kraft liner. Makers, exhibit builders and electronics assemblers use it for access panels, graphics, cushions and small device mounting.

50-yard length with 65-mil engaged thickness

The roll provides 50 yards of continuous fastener that is cut into two mating strips for installation. Engaged thickness measures 65 mils, so the bond stays slim behind ceiling tiles, carpet, trade-show graphics, wall panels and E-ZPass tags. Static-load guidance is four square inches per pound; heavier or dynamic loads will exceed the holding capacity of this low-profile design.

300 LSE acrylic adhesive on polypropylene

The 300 LSE adhesive bonds to polypropylene, polyethylene, metal, finished wood and similar low-surface-energy substrates without primers. Surfaces such as silicone, fluoropolymers or oily plastics will not develop full strength. The single-sided mushroom-stem profile means both halves are identical, simplifying inventory but requiring correct alignment during mating.

Highlights

  • Low-profile 65 mil thickness enables discrete mounting
  • 300 LSE acrylic adhesive bonds polypropylene, polyethylene, metal and finished wood
  • Reclosable mushroom stems replace screws, rivets and hook-and-loop fasteners
  • Single roll design cuts in half to create two mating strips
  • 86# polycoated Kraft liner protects adhesive until installation

Specifications

TypeAdhesive Tapes
ColorBlack

Questions about this item

Will the acrylic 300 LSE adhesive on this SJ4575 roll bond to the polypropylene panels I already have?

Yes, the 300 LSE laminating adhesive is designed for excellent adhesion to polypropylene, polyethylene, metal and finished wood substrates.

How can I verify the fastener strips are engaging correctly once installed?

Press the mated strips together until you feel the distinct snap of the mushroom-shaped stems interlocking; a firm tug should not separate them.

Does the 1 in x 50 yds roll include a release liner, or do I need to buy one separately?

The roll comes with an 86# polycoated Kraft release liner already applied to the adhesive side; no separate liner purchase is needed.

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