Sealant spray for coating\isolating electronics boards and connections

[VEGETA]

Hello,

I've been looking for a spray to be used on industrial equipment such as control valves positioners, instrument transmitters, switches, etc... to be used in my company's plants (lots of water, moisture, corrosion.)

I want it to fully isolate electrical connections, electronics circuits and so on from water, moisture, and preferably from rust\corrosion.

Our local suppliers in Jordan gave us one (It's a Kontakt brand) but it failed, doesn't work even in room temperature and normal conditions. after it is applied and left for good amount of time, it still doesn't coat and isolate.

I hope you give me trusted and tried brands with part numbers if available.


thanks!

[perdrix]

You want to look for "Conformal Coating".  Most distributors sell this.

David

[VEGETA]

You want to look for "Conformal Coating".  Most distributors sell this.

David

thanks, I will look for these.

however, is this suitable for industrial applications where lots of brine, salty liquids, corrosion, moisture...etc ? and can it be removed after being applied?

I appreciate it if you recommend a certain part number which has the highest isolation capabilities. since i saw lots of types like silicon and so on resins

[jonpaul]

Conformal coatings are high VOC varnish, some are two component like epoxy

Design for such tough environment but impossible to remove or service the PCB


Usually found in military and heavy industrial equipment.  Upon failure the board is discardzd,and replaced.


Jon

[Bud]

MG Chemicals is a major producer in North America, they have information on different types and part numbers of conformal coating they make:

https://www.mgchemicals.com/category/conformal-coatings/

[abdulbadii]

isn't practical cheaper use or DIY a vacuum packing or Vacuum sealers ?
the cover sheet is kapton or special plastic ?

[VEGETA]

isn't practical cheaper use or DIY a vacuum packing or Vacuum sealers ?
the cover sheet is kapton or special plastic ?

our stuff are on the plant and get lots of moisture and corrosion materials. we require versatile stuff like spray, for example to spray the board or contacts inside a pressure switch or sway switch.

MG Chemicals is a major producer in North America, they have information on different types and part numbers of conformal coating they make:

https://www.mgchemicals.com/category/conformal-coatings/

one technicians mentioned "silicon coating", so I guess it cannot be removed. if wanted to remove it I need to scratch right?


I think 422B-340G is suitable but they also have ECC3011 which is "solvent-free" but it doesn't seem to be a spray. I don't know which to choose.