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  1. #1
    Junior Member
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    Sep 2015
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    Smile How to seal acrylic on stainless steel?

    I have painted a stainless steel thermos with acrylic paint. I used an adhesive primer under to make sure the paint sticks swell to the stainless steel. Now I need a good nontoxic sealant to protect it through normal use and washing, for example I don't want the paint to chip or scratch off if I put the thermos in my backpack. (I will hand-wash it so don't need it to be dishwasher safe). It doesn't matter if it's mat or glossy I just want a durable finish.

    I am very new to acrylic painting and have never used any kind of sealant so any info or help is appreciated.

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  3. #2
    Junior Member
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    Oct 2015
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    Manchester, UK
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    You should look into some sort of lacquering.
    If you want it to be as durable as possible and withstand the washing and temperature changes you might want to look into boat paint sealant. However, I am fairly sure that it's not the most eco friendly and nontoxic finish (and would be fairly expensive).
    Clear nail polish, wood lacquer perhaps?

    P.S After a quick google search - MasterBond's Food Safe Adhesives, Sealants, Coatings & Encapsulation Compounds or Ultra-Clear's Gloss might do the trick. I don`t know what their prices are though. Might be quite expensive.


 

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