I had the flyback on my 4 slot cab go out on me so I decided to replace it and redo the caps. While is was flipping the board over and back removing caps this part fell out of somewhere.

https://imgur.com/a/3Km3W9C

I did not see where it came from and it appears to be broken. Can anyone tell me what this part is? Is it critical to the operation of my cab?

Also, the anode cup on the flyback I removed had a metal disk on the spring clip.

https://i.imgur.com/KKb9pno.jpg

The new one did not come with this disk. Should I move it over to the new anode cup?

Thanks in advance for any help, this is my first time working on a monitor(first time working on any crt really)