Attached Link: Joe's Poser Primitives

Hi,

I have a couple of Poser primitives in my free download area:

http://www.joes3dfantasyworlds.com/down/primitives/primitives01.htm

among them there is a morphing ring as well, you can adjust the thickness.

you may need to scale it in y-direction to adjust it.

or you may use my tubes.

hope this helps :)