Nylon/Plastic Filter Discs Creation

I'm looking for custom filter discs designed to remove very fine dirt or sediment from water. The discs should be made from durable plastic or nylon. This is to replace discs that are worn out. If you google spin klin discs you will see stacks of discs. Basically they are a circle made from thin. Plastic with grooves etched into the surface that the water passes through between each disc. I want copy's made at a much cheaper price than the genuine ones.