O-rings for the quick coupling for the heating cooler in the interior. Omega B FL. 2,2 16V. Built 2002

Hello community. My Ommega has me fully .. Clicked out .. . At the beginning of the last week when driving without rushing here on the city highway the temperature went up .. 100 degrees .. In the following also the account light. Man o man. What do ??? .-.- I have to say here however that I had already some time, water loss. This water loss was made out of the upper quick coupling hose that leads to the interior. This should now be made soon by my .. screwdriver .. n. .-.- Because of this thing …. I always had water to refill. It also helped me here. So fill up quickly to home about 2 km. .-.- Here arrived with heart palpitations. Let cool off …………. .- Then eyes open and everything can be examined. .- What actually can not be, but now ….. The quick coupling was from the upper …. metal tube …. Almost down !! Holla the forest FEE .-.- Here are read and read in the posts. New O-R are used. .-.- Get out of the old defective and strongly negated O-ring. This resisted something. Was probably also .. bissel fixed glued / burned … -.- picture is here from the appendix. Also the new O-ring. Data from the O-ring also ordered. .-.- O-ring. Size was —-> 15 x 3.5 mm NBR 70. .-.-.-.- Now I need the help or better the description as I get the NEW O-RING in the quick coupling and here in the intended groove / groove. .-.- Ha be also read in a piece, …. have managed, the O-ring is inside. Just say nice, it is not easy. .-.- I now ask here in all form, to get a description of how I can persuade this O-ring to fit and to be brought into dierse Rille / Nut. .-.-. I spent here for about 2 hours this afternoon here. The O-ring is not willing to be brought there with the best effort. .-.-.- I am absolutely at the end. Need tips. How to go should/must. Ask here for good advice. Best step by step. .– Still a nice evening.