The lid is too tight and I couldn’t close it probably. I have to use the old ring to replace the green ring.
Thanks for your feedback and sorry to hear you have been having problems. The new TM31 Lid Seal is designed to be much firmer than the previous TM31 Lid Seal and can feel very stiff or tight when 1st installed into the Mixing Bowl Lid. Don't worry, it will loosen over time and become easier. Our customer service team have been in touch with you regarding this to do some troubleshooting. If you have any further queries, please don't hesitate to get in touch again.