Has any member come up with a sure fire way of capping silicone tubes/liquid nails/no more gaps etc after use? I have tried screws, caps, bolts etc without much luck. Electrical tape seems to work for up to 2 weeks but air still seems to get in to set the silicone in the dispenser tube. I hate cleaning out the dispenser every time I need to use a product.
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Have you ever tried to make your own plastic cap? You can heat melt an old plastic nozzle from a previously used tube and then screw that onto the part used tube.
I just leave the nozzle on with a nail or screw in it and even though it dries out, you just put on a new nozzle because the silicone is usually still ok at the thread after quite some time or at least that's what I've found.
10-15cm of plastic tubing pushed onto the end of the nozzle. Then squeeze the sealant through to nearly the end of the tubing. When it sets, it will be hard in the tubing - pull that off, and the contents in the nozzle will be ok.
Note, this will only work to a point - I've had tubes that I have left for so long, the entire tube itself goes solid...