Rubber seals on CT400

Hi the Rubber seals on CT400 on the base of the tubes that prevents the liquid from going down with the lever, mines are broken, where can I find those?

Dear Friend.
We understand the problem you are experiencing and we can send you the appropriate parts free of charge. Please provide your phone number, the platform (where you purchased) and order number of your previous purchase, your name, email, shipping address and postal code to so that we can arrange shipping for you. Thank you for your cooperation.
We wish you all the best!
AUTOOL Customer Service Team