Looking for donut for 2018 RoadTrek CS Adventurous

[Mike Sollins]

I haven't been able to find a sewer donut for our RT that accepts the ~1" diameter nozzle from the macerator and fits into the standard 4" sewer pipe. Can someone tell me where to buy one? Thanks!
-Mike Sollins

[rowiebowie]

Originally Posted by Mike Sollins

I haven't been able to find a sewer donut for our RT that accepts the ~1" diameter nozzle from the macerator and fits into the standard 4" sewer pipe. Can someone tell me where to buy one? Thanks!
-Mike Sollins

Mike, my Airstream Avenue with macerator uses this at the end of the 1" hose. It has threads to screw into the dump opening and a cap on the end.

Very pricey for a hollow piece of plastic, but lightweight and works well enough.
https://www.amazon.com/Thetford-7040...1411122&sr=8-7

[Mike Sollins]

Thanks. I might get it but it does seem like a lot of money! I wonder why no one sells a simple rubber donut...

[Adagio]

Is this what you need?

[Mike Sollins]

Thanks, but I'm afraid not. The inner diameter at one side needs to be ~1 inch to for a snug fit for the narrow macerator hose nozzle. But, come to think of it now, maybe I can take a standard 4" screw-in plug and drill the needed size hole.