Low viscosity potting compound for electronics

• Low viscosity potting compound for electronics
  Posted by dimbmw on 03 Nov, 2022 01:58
• Hello everyone
  I’ve seen it many times on some electronic boards I’ve repaired over the years, a clear jelly- like sticky substance.
  What is it and where can I buy it?
  I need a stuff with very low viscosity to fill some narrow areas as well as all the volume where the PCB is located.
  Thank you!
• #1 Reply
  Posted by andy3055 on 03 Nov, 2022 02:31
• On a site like Mouser, search for potting compound. You can check the spec sheets and go from there.
• #2 Reply
  Posted by Kean on 03 Nov, 2022 03:57
• The clear "jelly" stuff that I have used is called Magic Gel from Raytech.  https://www.raytech.it/
  It isn't low viscosity though.  Nor is it cheap, but not many good potting compounds are.
  
  Edit: The Magic Gel datasheets do state "low viscosity" - so check the specs to see if it is suitable for you.
• #3 Reply
  Posted by dimbmw on 05 Nov, 2022 06:12
• Quote from: Kean on 03 Nov, 2022 03:57

  The clear "jelly" stuff that I have used is called Magic Gel from Raytech.  https://www.raytech.it/
  It isn't low viscosity though.  Nor is it cheap, but not many good potting compounds are.
  
  Edit: The Magic Gel datasheets do state "low viscosity" - so check the specs to see if it is suitable for you.
  

  
  Thank you, could you suggest what is it’s approximate shore A hardness when it dries?
  There are no viscosity numbers in the specs… but it looks very liquid on video.
  10 min working time is very short …
• #4 Reply
  Posted by Zoli on 06 Nov, 2022 16:52
• Quote from: dimbmw on 03 Nov, 2022 01:58

  Hello everyone
  I’ve seen it many times on some electronic boards I’ve repaired over the years, a clear jelly- like sticky substance.
  What is it and where can I buy it?
  I need a stuff with very low viscosity to fill some narrow areas as well as all the volume where the PCB is located.
  Thank you!
  

  Tough-seal fits your description, but: black, and cured is rubber-like-consistence; it has ~1h working time, available in 50ml cartridge to try out(dispenser & mixing tube recommended for partial use).