[Tubesforme]

I have also used super glue on bases and top caps for many years without problems. It wicks into the space between the glass and base and is easy to clean up the excess with alcohol or lacquer thinner.

Don't think Elmer's is really a good choice, as it does not adhere to glass well and is water soluble.

I have never had a problem with super glue. I have only used it on two top caps. In both cases the wire was long enough, but the cap was loose from the glass and the solder connection was loose. I put the super glue inside of the cap and then seated it on the glass, when hard resolderd the wire to the cap. Didn't have any problems. I also don't run it all around the tube base, I place drops in about four or six places, depending on base size. I have also used it on older tubes where I had to resolder tube pins and never had a problem with it. I used to try epoxy, the clear one, but usually always ended up with a mess.