... You have to be glad that you get any spare parts for such devices so nowadays. From experience, we all know that there no longer are often after two or three years, either the model, distribution or even the manufacturer. So here in the stable box everything is in there, what you need and my filter is now also without "improvisational check valve" again. One way or another you will also seal the passage of time certainly can not do, I am somewhat reconciled with the princely sum for some rubber ...