Sciencemadness Discussion Board

Best spray paint for inside of fume hood blower

Gammatron - 6-9-2022 at 05:51

I am replacing my fume hood blower for obvious reasons. I painted this with regular black spray paint which worked for a while but ended up being unreliable. I am putting a new blower together and I'm wondering what would be a better type of paint, mainly for acid fumes. Amazon has this epoxy enamel which seems like it could be good, I was also considering appliance epoxy, plain enamel or spray on rubber like flex seal or undercoating. Any ideas?

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[Edited on 9-6-2022 by Gammatron]

Texium - 6-9-2022 at 06:04

Epoxy enamel is probably the way to go. That’s what I used when I built my fume hood, and it seemed to work well, but I didn’t have much time to abuse it before I moved, so I can’t vouch for it 100%. I’d be wary of Flex Seal turning into sticky goop.

Gammatron - 6-9-2022 at 06:35

You're probably right about flex seal, especially with nitric acid.

Gammatron - 6-9-2022 at 06:44

I just found this stuff, much cheaper than the epoxy and specifically states good chemical resistance. Seems like a good option.

justender - 20-6-2024 at 16:32

Quote: Originally posted by Gammatron  
this stuff


Just in case anyone is looking for this in a decade, when the Amazon seller has moved on: SEYMOUR 620-1431 Industrial MRO High Solids Spray Paint, Light Gray Primer

charley1957 - 21-6-2024 at 05:42

This looks like some pretty good stuff. I’d certainly give it a try. I just painted some chemical storage cabinets after a rust problem due to a small chlorine compound leak. I used appliance epoxy after sandblasting out the rust. I suppose one might be as good as the other.