Dual Lock™ Reclosable Fastener

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Dual Lock™ Reclosable Fastener

Dual Lock™ is the strongest fastener system on the market, designed for high performance in automotive, aircraft, and building construction. Unlike Velcro, there is no "hook" or "loop", as each strip is open on one side and able to be fastened to any other strip. Dual Lock has up to 5x the tensile strength of industrial strength hook-and-loop products and resists harsh wet/dry and hot/cold cycles. Dual Lock™ is the only reclosable fastener strong enough to allow you to install mass loaded vinyl in your vehicle.




  • "Strong" grade Dual Lock™ strips are 250 stems per square inch
  • "Strongest" grade Dual Lock™ strip orders will be split evenly between 250 stem and 400 stem options
  • The "Strongest" level has 50% more tensile strength than the "Strong" and is what we use to hold up mass loaded vinyl.
  • Mushroom shaped stems interlock with one another when pressed together, creating a fastener much stronger than industrial strength Velcro.
  • Super strong, pressure sensitive acrylic backing will stick to metal, wood, vinyl, cardboard, glass, concrete and most plastics. Will not adhere to fabrics or rubber. 
  • Dual Lock strips can be cut into very small 1" x 1" squares and still be effective
  • Each strip is 12" long and is sold UNMATED (2 feet ordered = 1 foot of fastened material)




 Dimensions   1" x 1ft per strip 
 Thickness   3.51mm 
 Strength Options   250 stems/sq in. or 400 stems/sq in. 
 Temperature Rating   -20 °F to 220 °F 
 Color   Black 





 Data Sheet   Dual Lock™ Reclosable Fastener Data Sheet 


 Second Skin Product   Sheet Weight   Sheet Sq Ft   1" Dual Lock Length 
 Luxury Liner Pro™   12 lbs   9 sq ft   24 to 48 inches 
 Luxury Liner   9 lbs   9 sq ft    18 to 36 inches 
 Overkill Pro™   1.5 lbs   9 sq ft    4 to 8 inches 
 Overkill™   0.5 lbs   9 sq ft    4 to 8 inches  
 Heat Wave Pro™   4.5 lbs   24 sq ft   10 to 24 inches
 Mega Zorbe™ (no adhesive)   Not recommended      



Material Testing 

 Tested Properties   Testing Method   Performance 
 Fire Rating   ASTM E84   Class A 
 Flammability   FMVSS 302   Pass 
 Water Resistance      Closure strength not affected by prolonged exposure to moisture and humidity  
 Chemical Resistance      Resists most common solvents and alkaline solutions 



Installation Instructions

  • Application surface must be clean, dry, and free from oil.
  • As a general rule, 4 square inches of fastening area are required per pound of static load. More Dual Lock coverage is needed for high temperature or high vibration use cases.
  • For maximum bond strength, apply at room temperature and allow 24-48 hours before fastening. If you try and fasten/unfasten right away, the Dual Lock may be stronger than the adhesive backing.
  • You can further improve resistance to edge peel by recessing the fastener or rounding the corners.
  • Dual Lock should only be used inside the vehicle. Do not apply in the engine compartment or exhaust tunnel.


Type 250: Stems are in a wave pattern (approximately 250 stems per square inch)


Type 400: Stem heads are almost touching (approximately 400 stems per square inch)




Common Product Uses

  • Automotive, aircraft, and building construction applications
  • Mass Loaded Vinyl (MLV) installation in cars
  • Clean vinyl, wood, cardboard, metal, glass, concrete, and most plastics
  • Don't use on fabrics or rubber in general