3M™ Double Coated Tape 9731

3M™ Double Coated Tape 9731 is a differential tape on a polyester (PET) film backing. On one side, a firm silicone adhesive delivers a good bond to silicone rubber, strong holding power to various silicone surfaces, wide-ranging temperature performance, and solvent resistance. 3M™ High Performance Acrylic Adhesive 350 coats the other side for very high adhesion to various materials, excellent shear strength, and high temperature (350°F) and UV resistance. The combined strengths of these adhesives create an excellent option for when you need to bond silicone materials to a wide range of substrates. And the PET carrier adds dimensional stability and improved handling, which makes the converting process of die cutting and lamination even smoother.

Product Safety Data Sheet

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  • Bonding silicone rubber to low surface energy (LSE) materials
  • Attaching silicone rubber elastomers and foam
  • Attaching performed gaskets
  • Replacing, bonding, and sealing gaskets


  • High temperature and medium solvent resistance
  • High bond strength to HSE and LSE substrates
  • Dimensional stability and improved handling
  • Faceside Adhesive Material: 3M™ High Performance Acrylic Adhesive 350
  • Backside Adhesive Material: Silicone
  • Short Term Temperature Resistance: 350°F
  • Long Term Temperature Resistance: 250°F
  • Primary Liner Color: Tan
  • Primary Liner Material: Polycoated Kraft paper
  • Secondary Liner Color: Clear
  • Secondary Liner Material: PET
  • Thickness: 5.5 mil