Revolve clipping

I’m modeling a frame being built around a parabolic dish. After finding the radius of the curvature and using the revolve tool to model the 1.5" tubing- can I “trim” the rest of the circle? I’m hoping to extract the portion the ring that makes contact to the large and small diameter rings on the rear of the dish.

pic to show-
whisper (1)

can you mark up your image to show what you are needing? Are you trying to make a the dish seat better into the tuber frame?