Mini combustion electrode sealing

Boom! The classic potato gun harnesses the combustion of flammable vapor.
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Bluetooth
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For a combustion launcher what should i use to seal the electrodes? I already tapped the holes but i still want to make sure it's air tight and so the electrodes don't shoot out. Epoxy or super glue maybe? If super glue will work i would like to use that because i don't want to go out to home-cheapo to
buy some epoxy. Thnx in advance :D .
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Flying_Salt
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I used caulk on mine, worked pretty well, but you have to make sure not to move it while it's drying.
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PVC Arsenal 17
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Epoxy should do just fine. If you have JB Weld use that. That stuff is super-epoxy.

Super glue (CA, cyanoacrylate) is brittle, and doesn't bond well with most plastics.
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Bluetooth
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What about surf board patch epoxy? Like ding-all.
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frankrede
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how bout teflon?
Current project: Afghanistan deployment
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Bluetooth
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I need to reinforce them to not just seal them.
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noname
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Just use hot glue. Fast, easy, bonds to prety much everything, and is airtight.
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mark.f
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Just use a neoprene washer under the head of the machine screw, and then screw on a hex self-sealing nut, (have a ring of rubber on the inside on one side) from the inside of the gun to re-inforce.
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