I will use a rectangular pipe (65mmx100mm) for growing herbs on the wall outside my house. I want to close both ends of a rectangular PVC pipe without using glue so I can pull at anytime both ends for cleaning purpose.

Does anyone has a good mechanical idea? I'm trying to maintain the cost low so the less parts the better.

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  • Isn't this really a duplicate question of your last question? There isn't any safety/health reason not to use the non-toxic glue we talked about in you last question. Commented Mar 14, 2013 at 9:58
  • No, I decided to not use glue so that I can clean the inside
    – Juila
    Commented Mar 15, 2013 at 11:52
  • There are caps available for these which will friction fit just like the caps for standard PVC pipe. Commented Apr 9, 2013 at 0:33

3 Answers 3


Depending on your frequency of cleaning, you can put a bead of silicone around the outside after joining them. You can peel almost all of it off by hand to clean it.


Cork/Foam/Anything that can be molded to fit the hole snuggly.

Also a they make caps that extend slightly into the pvc pipe., find a rubber seal (old bike inner tube, large rubber band etc..)attach it to the cap, and then shove it in the hole.


How closed do you need it to be?

You could drill 2-4 bolts through the side to make something of a fence. It would contain dirt, but let water drain out.

Alternately, if there is a proper cap for this pipe, you could drill a single bolt through both the cap and pipe, and hold the cap in place with the bolt.

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