PE-50-P01E-WW-50 Eaton SENTINEL Filter Bag F31R36534Eaton bag PE 50 P01E WW 50 is a primarily polyester bag with a polypropylene ring. This bag is a size 01 and has a micron rating of 50. SETNTINEL filter bags are unique in that they are welded, not sewn. The edges of the silicone free felts are also heat sealed to eliminate loose fibers. The polypro ring is all plastic with a sealing lip that creates a pressurized seal between the filter housing and bag. This prevents bypass even under varying