... pleating 6. Available Filtration Rating (μm): 3, 5, 7, 10, 15, 20, 25, 30, 40, 60.7. Sizes of Pleated Filter Elements ... Index of Stainless Steel Sintered Fiber Web: 1) Absolute Rating(μm) :3-60 2) Bubble Point Pressure(Pa): 630-12300 3) Average ...