Help, my KeepCup is leaking

Your KeepCup is a splash proof vessel, it is not a vacuum sealed container. KeepCup was conceived as an easy to use product that replicates the functionality of a disposable cup.

If overfilled, tipped vertically or upside down, the plug hole will leak.  

Its not that, still leaking...

Are you a tea drinker?

If the lid is not sealing securely this could be a result of the temperature of the liquid.

When drinking tea in your KeepCup, remember not to overfill, and keep in mind that steam from boiling liquid will cause pressure to build up inside the cup. 

We recommend that you wait 30 seconds after pouring boiling water before putting your lid on.  The steam that escapes will prevent the plastic softening and causing your lid to detach from the cup.

Keep the plug vent open for liquid over 65C.

If you are still having issues,

You may be able to diagnose the issue. Run your hand around the rim of the cup and the inside surface of the lid. Is there a bump, or nick causing the leak, either on the rim of the cup or just inside the lid.

The old lids cannot be used on glass. Purchase here.

The new lids require a new plug. Purchase here.


If you feel that it may be a manufacturing issue, please contact our customer service team with the following:

  1. A video of the lid being placed on and removed.
  2. Order details: time, place and date.
  3. Hold onto the band and the plug.  We may get you to return the cup and lid for testing.

Have more questions?