I've recently descaled the flush and fill valve to solve a leaking problem on my Geberit UP200 concealed cistern, however when I reassembled everything, there is now a leak between the braided hose and fill valve. I noticed online that there should be a seal, which I must have lost in the process. It's quite frustrating because I managed to fix the original problem, but created a new one in the process.
I can see that Geberit has a part number 240.922.00.1, but I cannot source this in Denmark. Does anyone have specs on this seal and can recommend a generic replacement?