I have apparently lost the "collar" or flange that secures the pipe fitting or barb fitting to the end of my SICCE Syncra SDC 9.0 I have two of these pumps and need 2 additional flanges, does anyone know where I can buy these parts? This is what I found on Sicce's site but no way to order. The one I am looking for is the lower left of the picture below. Any help appreciated.