I should have said I have tried PVC fittings, rubber hoses (drain hose for a washing machine was close) (Lowes/HD) and about everything else I can think of. The rubber sleeve for the Fein, which I use often, does not work in this case. The outlet is 19mm thus the problem fitting. As I mentioned other woodworkers (on another forum) said the adapter to 1 1/2" does not fit & not waste my money.
I was hopeful someone has worked this out. This sander generates too much dust not to have it attaced to a dust collector.
Thanks for your advice.