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My Dopper bottle is leaking

Your Dopper isn’t supposed to leak and we get that it’s frustrating when it does. But in most cases, there’s no defect. Often, the bottle just wasn’t completely dry when it was closed. Let’s figure it out together.

Leaks are often caused by moisture trapped in the threads. This usually happens when:

  • You filled your Dopper through the cup instead of the top opening.

  • You filled the bottle, opened the cup to drink or pour, then closed it again without drying it.

 

Water can stay in the screw threads or inside the cup and slowly escape later.

Quick fix:
Wipe everything dry before closing the bottle again. This usually solves it.



Check if it’s a real leak

  1. Dry every part of your Dopper thoroughly: especially the threads on the bottle, cup, and cap.

  2. Fill it with still water (no sparkling).

  3. Close it firmly and give it a little shake.

    Still leaking? Then check the rubber seals. T


Check the rubber seals

Leaks usually happen if a seal is loose, dirty or missing.

Check:

  • Is there a seal ring in the cap and does it sit properly?

  • Is there a seal ring in the cup and does it fit well?

  • Is the rim of the bottle smooth and undamaged?

After this check, it should be clear whether the leak is:

  • between the cup and the bottle, or

  • between the cap and the cup


Good to know

  • Don't use sparkling water in your bottle: it causes pressure and leaks.

  •  

    Always fill your Dopper bottle from the top, not through the cup.

  •  

    Don’t over-tighten. Just close it firmly.


Prefer to watch instead of read?

Watch our step-by-step video guide above. It walks you through all checks.

 

Still leaking?

In rare cases, a Dopper may leak:

  • on a plane (air pressure)

  • if a part is damaged

  • if the bottle isn’t closed properly

  • due to a production error

If that’s the case, contact us via chat (on the bottom right) so we can help you further or replace a part if needed

Tip: to be safe, don’t store your bottle in the same bag as valuables like your laptop.