Need Opinion - PCB Protective Lacquer/varnish hash board

[Proclamer]

At the moment I have some T9 in my little farm, I make the maintenance one time per month. clean the dust and inspect the state of the hasboards.

I think is possible apply some Lacquer/varnish to protect more the hasboards, someone have information about this or any brand to use, characteristics or any product? is good idea this?

[ccgllc]

I don't believe it is necessary.

[NotFuzzyWarm]

IF you want to use one it is called a conformal coating such as https://www.techspray.com/ur-urethane-conformal-coating-2 and available in single can quan from Mouser, DigiKey, Newark, etc.

Used only to seal the boards against corrosion & fungus. DO NOT APPLY ON HEATSINKS!

[fanatic26]

If you are going to apply it, follow bitmains example for what they have, just cover components and not go crazy dunking the whole board in it.

[Proclamer]

Thanks for the replies dudes, for the moment select this product:

https://www.ebay.es/itm/BARNIZ-AISLANTE-TRANSPARENTE-50ml-PROTECTOR-PCB-contra-corrosion-oxidacion-Q033-/201558280020?utm_medium=cpc&utm_source=twenga&utm_campaign=twenga&utm_param=eyJlcyI6MCwicyI6NTMzODU0NywiY2kiOiIwNWQ0OTJkYzNkYjQ2MTFhZmMxZmZhZGU0MjljYTFjOSIsImkiOiI1ODU2ODMyMDAzNzYxMTEyMDIyIiwidHMiOjE1Mjc0MjU3MzYsInYiOjMsInNvIjoxNTAwLCJjIjo2MzN9&rmvSB=true

of course not apply to heatsink only the pcb, at the future post here the pics.