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Kroil patches eventually melted plastic.

Okie743
Just a heads up about Kroil and plastic.

I stored some Kroil soaked cotton bore patches in a plastic container and later found they had stuck (glued) to the plastic, kinda melted into the plastic.

Th clear plastic was container was the type that 3M scotch electrical tape is stored in.

I use and like kroil as a bore cleaner and to keep gun bore seasoned to pre vent rust. I'll keep a heads up about Kroil and plastic.
The patches had been in the clear plastic container for approx. one year and stored at around 70 degrees F, so not exposed to any severe heat/cold. Might have melted more if exposed to any hot temps.
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Comments

8 comments

Date Votes
  • grdad45
    Thanks for the warning.
    Not sure what kind of plastic is used for the Scotch Elec. tape, but you have to figure it is the cheapest they can find, probably styrene. Different types of plastic react to chemicals in a lot of ways. Polypropylene can handle most solvents, but some plastics will turn into blobs.
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  • yoshmyster
    Kind a like Hogue grips I took off my Colt series '80 Ed Brown worked over with a Mini-Comp installed (that may be for sale). The metal had gummy goo where the grips sat. I used regular gun oil to keep her black with the lightest application. So it seems rubber ain't safe with regular gun oil so I reckon Kroil'll just eat that, too.
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  • iceracerx
    Most petroleum distillates (Kroil) will dissolve plastics that are petroleum (oil) based. That is why Kroil comes in a metal container.

    Petroleum distillate products include jet fuel, diesel oil, light fuel oil, lubricating oils, motor oils, heavy fuel oils, tars, and asphalt. As well as others that are solvents like mineral spirits, kerosene, white spirits.

    Most products that come from petroleum are manufactured by a distillation process, which is what the term Distillate means.

    Keep your Kroil in a METAL container or a plastic container designed to resist oil. HDPE (high density poly ethylene) is a good choice.

    https://www.sks-bottle.com/340c/HDPE-PlasticBottles.html

    I bought a gallon can of Kroil and passed it out to friends in these:

    http://www.thecarycompany.com/containers/metal/f-style-oblong-cans
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  • Brookwood
    I know I am old but does anyone remember all the hoopla that was raised when Coca Cola started using plastic bottles?

    It was said that the product absorbed the plastic and made it taste bad.
    They quickly went back to glass and aluminum cans but then after a few years snuck back into plastic without complaints.
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  • buddyb
    I have a 20 oz. plastic soft drink bottle full of Kroil in my workshop that has been there a couple of years.
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  • yoshmyster
    quote:Originally posted by Brookwood
    I know I am old but does anyone remember all the hoopla that was raised when Coca Cola started using plastic bottles?

    It was said that the product absorbed the plastic and made it taste bad.
    They quickly went back to glass and aluminum cans but then after a few years snuck back into plastic without complaints.


    Anyone remember those 16 ounce squat tubby glass bottles they came in with a thin layer of styrofoam label? I always remembered 2 liters came in plastic. Two piece plastic in fact with those bottoms that made great planters because they already had holes built in. I think I have a few that's holding Go pieces. I might find that while searching for take off bits.
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  • Wulfmann
    Kroil is actually coal oil.
    Not sure if any or how much petroleum is in Kroil.

    It is particularly good when removing rusted on old barrels. Let it soak overnight into the grooves and a barrel that would not budge loosens right up

    It is certainly a great bore cleaner because it gets under stuff so well

    It also works its way thru the folds in the metal can's bottom it comes in so I leave that on a small piece of cloth to soak it up and use it to clean with later

    Some have even accused it of removing chrome plating but if that ever happened it was because that was not applied correctly
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  • iceracerx
    quote:Originally posted by Wulfmann
    Kroil is actually coal oil.
    Not sure if any or how much petroleum is in Kroil.

    It is particularly good when removing rusted on old barrels. Let it soak overnight into the grooves and a barrel that would not budge loosens right up

    It is certainly a great bore cleaner because it gets under stuff so well

    It also works its way thru the folds in the metal can's bottom it comes in so I leave that on a small piece of cloth to soak it up and use it to clean with later

    Some have even accused it of removing chrome plating but if that ever happened it was because that was not applied correctly


    Kroil is 40-60 percent Petroleum distillates.

    http://www.kanolabs.com/MSDS2015/Kroil (LIQUID) 6-5-15.pdf
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