It is impossible to tighten the cap to close my Dopper

It goes without saying that it should be possible to tighten the cap to close your Dopper.

Please use the contact form to answer the following questions:

  • Has the Dopper been exposed to temperatures over 65°C?
  • Can you see any unevenness on the screw thread of the cup (the white part)?
  • Can you see any unevenness on the screw thread of the cap?
  • Is there a rubber sealing ring inside the cup?

Please also enter the colour of your Dopper and your address details in the contact form, so we know where to send any replacement part to.

We will get in touch!