Stopper for Defender entry pipes

This is a stopper for the double pipe entry of the Land Rover Defender.
The original stopper from Land Rover or Expirience Parts last about 3 years. After that you have to live with water in the entry pipes or you can just print some yourself. The tubes have an outside diameter of approx. 46mm and inside approx. 41mm. Mine are galvanized and powder-coated, so they're a little smaller on the inside and a little bigger on the outside. You can adjust this via the scaling or write to me and I'll make it suitable.
I printed with TPU for the first time and couldn't do it without support material!
It is 1 STL file.
The part is 20mm high and 46mm in diameter.

My printer settings were as follows:
- Material: TPU
- Diameter of the nozzle: 0.4mm
- Layer thickness: 0.20mm
- Wall thickness: 1.2mm
- Filling: 100%
- Speed: 30mm / s
- Total printing time about 2.3 hours
- Total amount of material: 17 g
There is certainly another way. As I said, I tried it for the first time, but the stopper are flexible and tight. :)