Replacement filter for discontinued vacuum

I have a Eureka upright vacuum and I guess it got discontinued several years ago. I have been unable to find a replacement filter for it now for years, out of stock everywhere. I’ve been cleaning the filter but now the filter has a hole and it needs to be replaced. Anyone know how I can replace the filter? Really don’t want to buy another vacuum and turn my current one into a useless hunk of plastic.

This is the part I can find nowhere: https://kirkwoodsweeper.com/shop/eureka-dcf5-dust-cup-filter/