Plastic hose stopper (for 40mm)

Stopper (a cup) for protectional tubes (in Czechia this tube is known as Kopoflex tube). This stopper is for 40mm diameter, and is inserted externally. I made this design because stoppers are not available so much.

This stopper is for covering against dust, stones etc.
If you need longer time cover, you can glue it with neutral silicone.

Kopoflex tube and original cup is on picture.