I have replaced the bottom change over hose (spiral) in my UP22 Dyson hoover, but am struggling to locate a replacement glued gasket which holds the hose in place.

Can anyone confirm whether 

Part no. 911041-01 is the relevant gasket? Or provide a part number of not?

the gasket isn’t especially well described on the exploded diagrams - it measures 27intern x 36 external x 3mm deep and is foam cored with an adhesive cover