Not just an replacement, but an improvement!

This glue can be used to repair a loose tube base, when there is still some good part of the original glue inside. The original glue will be partially solved and build a strong compound with the new glue.  It will have a very good result, and requires no cleaning of the surfaces to be glued.  Any residue can be removed easily as long as the glue is still wet. 

As long as not fully, some redidue can be removed with a wet clother, so you can clean the tube after repair. Once dried, this glue will not solve any more, and gets transparent. So the optical result is very nice.  

We have two kinds of glue:

Type #1

Tube base glue #1 is a thin kind of glue, for repairing sockets where the original glue is totally in place, but only loose from the glass.

Type #2

Tube base glue #2 is the same as type #1, but there are fine particles mixed in it, and it is a compund. This glue is used for repairing sockets where there is a small gap between the glass and the socket. You can repair the base from the outside, just fill the gap. Tube base glue #1 is also used when you have repaired a tube with glue #2, but the base gets loose again. This means there was too much dirt on the glas. This can happen, and in such a case re-glue the tube with glue #1, and this will fix almost any loose tube base permanently. In very rare cases you need to re-glue twice with glue #1, to fill the gap completely.

Attention: This glue is organic and may not be stored at frosty temperature.

Instructions before use: 

1. With historical tubes, the printing on the glass wipes off easily, and this greatly reduces the collector’s value. To prevent this, cover the glass with paper and put tape all over the paper, so the printing will stay undamaged.  You can also put a small plastic bag over the glass, and tape this at the glass bottom.  Also tape the tube base from the side. So only the gap is left, to work on. It is much less work to prepare the tube like this, then having to clean it afterwards, and the risk damaging of the printing. 
2. Get some strong elastic rubbers.  You will need those during the process. 
3. Mix the glue in the bottle, using a small screwdriver or an old chop stick. Glue#1 may look "bad" when you open the bottle, but just needs good mixing. Some particles are inside, it is normal. When mixing glue#2, this will become a fat compound.
4. Inside the bottle is a small brush. With the brush, apply the glue #1 between the base and the glass, all around the base. It is important not to use an excessive amount of glue.  
5. Hold the tube horizontal and gently rotate the base back and forth against the glass, with many small movements, and use no force.  This will solve the original glue and the new glue will slowly move inside the base while doing so. You will see this happening after 30 seconds, while making the small movements all of the time.  Use no force while rotating the base, because otherwise the original glue breaks off.
6. Only when the glue was completely absorbed quickly, you can repeat the above step only once. Don’t try to put as much glue inside the base as possible. 
7. Wipe off excessive glue, but there is no need to perfectly clean it away. 
8. Put the elastic rubbers on the tube, so the base will pressed to the glass. Some glue might be pressed out.
9. Clean the tube with a cloth and a few drops of water on the cloth. 
10. Rotate and adjust the base in the original position now. 
11. Let the tube dry.  DON’t put the tube in the normal position. Keep it upside down, so no glue will leak on the pins, inside the base.  It may be useful to use a jar or a glass for that.
12. After 10 minutes check if some glue has come out, and remove this when needed.  Now finally clean the tube.  Later, a small film of glue can be removed easily, but dried drops can’t be removed well.
13. The drying time is two weeks.  (Sorry!) During this time the tube must be upside down, to prevent tube glue internally leaking on the electrical wires.  Don’t try after one day if the base is already fixed, because it may look ok, but may break off when you use it. So don’t try it. 
14. Don’t put heavy force on the tube in the beginning, as the hardening will continue for some more time.
15. Important for good result is that most of the original glue is still there.  When the tube base will break off again, this may happen when the gap was very large. In this case simply repeat the repair, and often the second try or third try is successful. Take small amounts of glue.  If you have to, repeat, and eventually the gap will be filled.
16. After a tube base repair, the tube must be tested, for short-circuits or leakage. This is just to make sure no glue has dripped inside the tube base. Only if it passes this test, it can be used safely. 

To prevent the a socket to break off: Never pull out a tube by the glass.  Only pull by the base. 

Tube base Glue

Glue#1 Order nr
611-007-91

Glue#2 Order nr
611-008-33