KeepCup is a splashproof and not a vacuum sealed container, so it will leak if tipped upside down, or the sealing plug catches. If the lid is not sealing securely this could be a result of the temperature of the liquid.
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.
It's not that, still leaking...
Are you a tea or black coffee drinker?
If the lid is not sealing securely this could be a result of the temperature of the liquid.
When drinking tea or black coffee 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 65°C.
Not that either...
The old lids cannot be used on glass. Lids for glass are available via our website.
The new lids require a new plug.
It's a product fault...
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.
Please contact our customer service team with the following:
- Photos showing the issue
- A video of the lid being placed on and removed.
- Order details: time, place and date.
- Hold onto the KeepCup as we will just replace the faulty components. We may get you to return the cup and lid for testing.