Not sure how well it would hold up, but you could try gluing a piece of leather to a piece of 2000 hook n loop? Or maybe a coat of epoxy on a piece of H/L 2000. Probably crazy ideas but it is getting late
By the way you can get H/L 80/180 grit paper its all I use on my DA sander (not sure about 40 grit, I never use anything that coarse) . Maybe that's an option too?