Justinmcf: Aha! Where do I find this rubber adapter? Do you have a part number? It seems that this part should be found under the CT 22 and CT 33 section of the catalog.
The most likely possibilities that I see are: under the catagory of "Hose sleeves - Reducing sleeves", the 487 071 is described " With rotating adapter for D27 suction hose Replacement, tool end of extraction hose for our standard 27mm hose." The 487 721 is described "Antistatic version with rotating adapter for D36 suction hose Replacement, tool end of extraction hose for our mid-sized 36mm hose." I would have much more confidence in those parts being what I want if anywhere in their description they mentioned "rubber" - in the photos, they look like they could easily be plastic.
The most likely possibilities that I see are: under the catagory of "Hose sleeves - Reducing sleeves", the 487 071 is described " With rotating adapter for D27 suction hose Replacement, tool end of extraction hose for our standard 27mm hose." The 487 721 is described "Antistatic version with rotating adapter for D36 suction hose Replacement, tool end of extraction hose for our mid-sized 36mm hose." I would have much more confidence in those parts being what I want if anywhere in their description they mentioned "rubber" - in the photos, they look like they could easily be plastic.