Adhesive that will survive anodizing

Forgot to mention, The aluminum is 6061 and will be using a Type II anodizing process. Thanks for any help.

Adhesives are one method.
Putting in one plug, filing the tube with water and then inserting the other plug is cleaner and keeps the tubes from floating. Since the tube is full, there is very little tendency to let chemicals enter, even tho you are using solutions and rinses of different temperatures.

Is the plug permanent or just a temporary plug intended to prevent the I.D. from anodizing? I don't think an adhesive will work, but there will be a way to get it done. If possible, attach a picture of the tube and plug. Also tell us what type of anodizing it is.

Aaron

I am not sure of which adhesives will work (I know it is done) but beware that the adhesive can electrically isolate the plug and prevent it from anodizing along with the tube (or vice versa) unless both/all items are contacted during racking.

If I were you, I'd anodize the caps and tubes separately, then attach afterward. The main reason being, if the seal is not perfectly done (liquid tight), the tubes could possibly get process solutions trapped inside which could/would leak out a a later date. Or, even if there is a slight gap, that could also trap solutions that would leach out and give you, or your anodizer, cosmetic issues.