320 x 40mm Spin Disc Filter
click to buy it now: https://www.corbettequipment.com/product-page/filter-spin-disc-powderless
Filter Spin Disc Powderless, the most popular disc used on FMB machines today.
Used on GreenEarth or Silicone machines also with activated clay or without. Use with all alternative solvents.
320 x 40mm some companies are listing these as 315 x 40mm
Union Drycleaning, Realstar, and FMB OEM part