8331 – Silver Conductive Epoxy Adhesive

For over two decades, 8331 has been our flagship product. Now, after much research and development activity, we are excited to announce 8331 will be replaced by an improved version, 8331D. 8331D offers improved productivity, curing at room temperature in only 5 hours instead of the 24, while offering twice the working time, 20 minutes instead of the old 10 minutes. As well, 8331D offers improved conductivity and flowability. It also provides higher safety, being free of SVHC’s and no Proposition 65 listed ingredients.

8331 is an electrically conductive, silver-filled two-part epoxy adhesive. It is smooth, non-sagging, thixotropic, and bonds well to a wide variety of substrates.

This conductive epoxy allows for quick cold-soldering repairs. It can also be used as a solder replacement for bonding heat-sensitive electronic components, or for making conductive connections where soldering is not an option, such as when bonding to glass, soft metals, or plastics. It provides excellent EMI/RFI shielding and is very effective in filling seams between metal plates.

8331 has been formulated to be economical. For a higher fill that maximizes conductivity, use 8330 or 8330D. For a longer working life, use 8331D or 8331S.

For a 1-part alternative use 9410 or 9400.

We also offer a full line of thermally conductive electrically insulating epoxy adhesives.

Features & Benefits

  • High electrical conductivity
  • Convenient 1 to 1 mix ratio
  • Working time: 10 minutes
  • Cure time: 24 hours at room temperature or 15 minutes at 65 °C (149 °F)
  • Creates strong permanent electrical connections
  • Cures at room temperature
  • Excellent adhesion to many substrates
  • Room temperature storage
  • Long shelf life
  • Strong resistance to humidity, salt water, mild bases, and aliphatic hydrocarbons
Catalog NumberNet WeightNet VolumePackaging
8331-14G14.4 g6 mL2 Syringe kit
8331-50ML120 g50 mL2 Jar kit
8331-200ML482 g200 mL2 Can kit


This product can expose you to chemicals including ethylene glycol, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Safety Data Sheet

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