Dual Lock SJ3870 SERIES

3M™ DUAL LOCK™ RECLOSABLE FASTENERS: MODIFIED ACRYLIC ADHESIVE, TYPE 250

FDC SJ3870 Series is 3M™ Dual Lock™ Reclosable Fasteners SJ3870. 3M™ Dual Lock™ Reclosable Fasteners are positive locking, hidden fasteners designed for use in a variety of attachment solutions. They consist of continuous strips of polyolefin stems with a mushroom shaped top protruding up from the backing. When snapped together the mushroom shaped caps interlock producing a strong reliable fastener.

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Film TechnologyDual Lock™
Film Thickness.145″ (unmated)
Media Color
FinishN/A
BlockoutYes
Outdoor DurabilityYes
Adhesive / ColorPermanent (Mod. Acrylic) / Grey
LinerRed, Silicone Treated Polyolefin
ConformabilityFlat Surfaces


Computer CutN/A
Steel RuleN/A
Thermal DieN/A
Flat BedN/A
SheetableN/A
LaminateN/A
Shelf Life2 Years


Thermal TransferN/A
SolventN/A
Eco SolventN/A
UV InkjetN/A
ScreenN/A
LatexN/A
Dye SublimationN/A


Wet ApplyNo
Minimum Application °F68° F
Interior / ExteriorInterior and Exterior


Part No.
Roll Size
  • SJ3870-0114:1″x45Yds
  • TB3870-0101:1″x10Ft

Sizes shown indicate the full selection available. Some sizes may have restrictions or minimum requirements. Please contact FDC Customer Service for complete details.

  • 03 Black

Colors shown indicate the full selection available. Some colors may have restrictions or minimum requirements. Please contact FDC Customer Service for complete details.

The color samples provided here may not be exact representations of our products. Various factors such as monitor resolution, color settings and display type can all effect how our color charts are viewed on the Internet.