as it looks overall.
the screw pushes the small tube down on the washer which pushes the silicone ring out to the side so it closes tight in the pipe
nylon top (Lost the 2 O-rings when I took it apart)
Black Plastic Round Handle Ball Knob M10 Threaded 40mm Dia Machine Tools (ebay)
2 washers (The bottom is welded on the threaded rod)
homemade silicone ring
threaded rod + bolt
steel pipe (id 10 mm)
seamless pipe https://imgur.com/a/eM9OQ2q
3: The two nylon parts to make the silicone tip
I put some tape around the block to the right and fill it with silicone and push the left part down in it.
4:To make the ring I fill it with silicone
5:table top bolt M10 so I can level the silicone.