WOOCS 2.1.8

Thanks to the feedback of Oomph customers, it has become increasingly clear that a small number of Oomphs have had an important gasket seal installed the incorrect way around during assembly. If you have experienced problems with your Oomph such as leaking whilst drinking/pouring, difficulty plunging or fixing the lid in place then it is vital that you check that this seal is correctly in place.

The seal in question is known as the ‘D’ seal as it is shaped just like a capital letter ‘D’.   As you will see from the illustrations, it is important that the flat edge of the D is placed into the groove around the top of the Oomph first, with the rounded edge exposed. If the rounded edge is sat in the groove then a proper seal cannot be formed and liquid will escape. Moreover, the extra protrusion of the gasket will prevent the lid and external cover from fitting properly, making plunging and locking the Oomph difficult or impossible.

cross-section-diagram-top-seal
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Whilst we sincerely hoped that every Oomph would be enjoyed out of the box without any problems (and this has been the experience in the vast majority of cases) we fully appreciate that this error, a consequence of each Oomph being assembled by hand, has caused some consternation.

Therefore, this short guide is here to help you quickly and easily fix the problem.

  • Firstly, remove the ‘D seal’ completely, being careful not to stretch or tear the rubber.
  • Check that the rounded edge of the D is to the top.
  • Begin gently pressing the flat edge into the groove.
  • To ensure it is fully located, turn the device upside down and press against a flat surface.
  • Check the seal is fully located and there are no gaps or bumps in the gasket.
  • Test the Oomph by brewing a fresh coffee.
    wrong-seal
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    correct-seal
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Once the ‘D seal’ gasket is fully in place, the outer casing should fit properly and lock into place and the Oomph should not leak during drinking or
pouring – but remember, the lid is NOT designed to be water tight and WILL therefore leak if turned upside down or left on its side. A water tight lid is currently in development and will be in production soon.

If you continue to experience problems with locking the Oomph in place, please continue to the rest of our troubleshooting section.