Bi-Fold Closet Door Part

Slider Disk to help guide the door open and closed.
I need to replace the slider that the post of my bi-fold closet door fits into. The slider fits into a track and the top of the post slip into the center hole of the slider. The hole does not go all the way through the disk. The bottom the disk is solid. I am not able to locate this part so I am reaching out to you. The diameter of the slider is 7/8". The height of the slider is 1/8" with the nipple on the top adding another 1/8". Please see the pictures I have include. Thanks for your help.

Good Morning Lauren,
Looks perfect. Thanks so much for your insight. I have ordered the piece along with a couple of other parts. Thanks again for your help!
James