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post #1 of 45 Unread 08-29-2019, 08:52 PM Thread Starter
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Off Topic Repair Plastic Gas Can

OK, off topic, but related. I'd heard about the issues with the "EPA" gas cans but had a couple of older 5 gallon ones which worked fine. One developed a leak on one side about middle way up. Guess it's time, went to TSC and bought what seemed the least painful of the assortment. Works OK, but takes about 7 minutes to empty. Wondered if there isn't something which would repair/patch a plastic can? I've used super glue and sawdust in carpentry and have heard about super glue and baking soda as a very strong patching agent. Anyone know if that will work to contain gas? Is there an "off the shelf" product, e.g. JB weld, etc. for this purpose?

Thanks for your time,

Ev
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post #2 of 45 Unread 08-29-2019, 09:25 PM
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Re: Off Topic Repair Plastic Gas Can

Easiest/best fix will likely depend on the plastic and the leak. If it's leaking from a seam splitting, you might have some luck remelting the plastic with a soldering iron.
I would think JD Weld or other epoxy putty would work to patch a hole, but a split along a seam I don't think it would do well on. In either case, unless it's a nice can or otherwise something special, repair may not be worth the cost and effort.

As always, when dealing with gas cans be safe. If I am cutting, welding, or otherwise putting heat or spark on a fuel can/propane tank/etc I usually fill them entirely with water first. Vapors can't mix with oxygen and go boom if there's no room for vapors in the first place. Be aware though, for a soldering iron such a volume of water is going to be a heatsink and may be problematic.

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post #3 of 45 Unread 08-29-2019, 09:33 PM
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Polyethylene welder.
I fully understand most folks don’t have one (nor do I). However, some of the polyethylene material and a soldering iron work.
Or add a vent to the evil EPA can.

I feel your pain. I owned one, then gave it away. I watch yard sales for old cans now. I about cried when my dad brought me this one for $1. I believe it was a virgin. The yellow one I found alongside the highway this spring. It’s also inconvenient. No spout by design, so I pour it into another can that DOES have a spout. I just use it to get all the fuel I can on a fuel run to the station with off road diesel.
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post #4 of 45 Unread 08-29-2019, 10:16 PM
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Re: Off Topic Repair Plastic Gas Can

I found a gas tank sealer at the local Dollar store that works well on poly tanks. I have not tried it yet on plastic as of yet. It does work well on polycarbonates.
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post #5 of 45 Unread 08-30-2019, 11:40 AM
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Re: Off Topic Repair Plastic Gas Can

A body shop might have a plastic welder that can seal up cracks or punctures in that type of plastic..
I have used a soldering iron to melt plastic things back together before--and also lit a piece of similar plastic on fire and let it drip on the hole or cracked area to weld it up..
Several cracked batteries I got free that were not very old and going to be scrapped I saved by using the soldering gun and some baking soda & super glue too..
That stuff might dissolve under exposure to gas after awhile though..

Not many sealers or adhesives will stick to that type of plastic,as noted above parts stores do sell plastic gas tank repair kits,which might work OK on a plastic gas can..

I had a few friends who had cars that needed "race fuel" due to high compression,I scoffed 2 of the empty 5 gallon cans the race fuel came in..unfortunately I left them in my shed a long time empty,and condensation made some rust inside them,so I probably wont be using them for fuel again..I can get more from them anyways..
I see "old" galvanized Eagle gas cans and others cheap at flea markets and yard sales--only bummer is you probably wont know if they leak till you get them home ..


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post #6 of 45 Unread 08-30-2019, 01:26 PM
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Re: Off Topic Repair Plastic Gas Can

You can buy non EPA spouts for "Water cans only " wink wink and use those on the newer cans. I think you can find them on evil bay for $6-9 a spout.

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post #7 of 45 Unread 08-30-2019, 01:37 PM
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Re: Off Topic Repair Plastic Gas Can

One of the biggest problems is the blow molded poly material itself as not many adhesives work well on that. Tractor-Holic has an idea that may work by melt dripping like material onto the area. If the leak is a puncture instead of a split seam, you could try inserting a vent cap there. Drill the hole out and use the vent cap to seal.

https://www.amazon.com/YELLOW-Cap-Re...s%2C197&sr=8-4
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post #8 of 45 Unread 08-30-2019, 02:05 PM
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Re: Off Topic Repair Plastic Gas Can

I have used 1 gallon plastic gas cans as fuel tanks on some things before by heating up a bolt held in a pair of pliers and pushing it thru the bottom of one side to melt a hole in it,then quickly thread in a barb fitting while the plastic is still molten..a pipe nipple and pipe cap could be used in the same manner to plug a hole in the can..

I have also used brass tire valve stems as the fuel outlet too,you put a wire up thru the hole you made and get it to come out the filler spout opening,then the valve stem can be slid down on the wire with its rubber gaskets and tightened in place..some guys add one up near the top for a vent too,to aid in faster pouring without it going "glug-glug-glug" and spilling everywhere on those new EPA cans..


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post #9 of 45 Unread 08-30-2019, 10:40 PM Thread Starter
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Re: Off Topic Repair Plastic Gas Can

Thanks for all the responses. I think I'll try the glue and baking soda and see what happens. I looked at the "water can spouts" on Ebay, $13.95, TSC has the same thing for more $$. My brother likes to go to flea markets, I'll ask him to look out for the old ones. I did see some of the old ones on Ebay, $12-15+$10 S&H. Don't think so. :-)

Thanks again,

Ev
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post #10 of 45 Unread 08-30-2019, 10:49 PM
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Re: Off Topic Repair Plastic Gas Can

I recently patched a crack in a plastic watering jug by applying a regular tire tube patch. Roughed it up, put on the glue, and then held the patch in place with some weight. Worked great for a water jug, but I don't know if the gasoline would attack the adhesive.
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post #11 of 45 Unread 08-31-2019, 08:02 AM
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Re: Off Topic Repair Plastic Gas Can

I wouldn't bother, gas spills are just too dangerous.

I see older ones at garage sales all the time for a buck or two.....just sayin'

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post #12 of 45 Unread 08-31-2019, 07:31 PM
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Re: Off Topic Repair Plastic Gas Can

Menards has some replacement spouts for like $5. I've debated on buying one or two the last couple times I went there. I just don't have the need for any at the moment. I'll probably pick one or two up next time.
about five years ago I got a snow thrower with a little 2.5 B&S with a pulse jet. The pulse jet had a little pin hole in just the right spot to pee gas on the muffler. I kind of suspect it may have been some form of sabotage, but anyway, I patched that up with super glue as a quick fix to get the driveway cleared and it's held up ever since. I'm not sure how well super glue would work on a cracked gas can though... Super glue is pretty brittle it would probably re crack easily.
I've had good success welding HDPE (which I'm pretty sure is what they make gas cans out of) using a soldering iron with similar strips of scrap HDPE. Haven't tried it on a gas can though... I think I'd rinse it out with water then let it air out real good, and repeat until I can't smell gasoline any more first. Also leave the caps off so it can't build pressure.

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post #13 of 45 Unread 09-04-2019, 11:15 AM
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Re: Off Topic Repair Plastic Gas Can

GasSpouts.com has both spout replacements and vent fittings, I have replaced all of mine. Just a note, you are not putting gas into the Kerosene can in the picture are you? Just say'n, could be a disaster waiting to happen!
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post #14 of 45 Unread 09-04-2019, 01:39 PM
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Re: Off Topic Repair Plastic Gas Can

Here is what I know about "welding" plastics: You must first identify the type of plastic which is clearly marked on the can. You will need a welding stick of the same material and a welding gun. HB sells such a kit that includes different types of plastic welding rods. I believe they sell a couple different kits.

Let me reiterate: WATCH YOUR BRISKET!!! You'll never hear the boom that kills you.
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post #15 of 45 Unread 09-04-2019, 03:48 PM
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Re: Off Topic Repair Plastic Gas Can

I bet you would find something here that you would like....

https://www.globalindustrial.com/c/s...IaApyNEALw_wcB


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