3M Betafine XL Series Filter Cartridge Absolute Rated XL09PP025DD Polypropylene 9.75 in. 2.5 Micron Double Open End Nitrile O-Ring 30 per case.

This absolute-rated, 100% polypropylene, pleated cartridge features Advanced Pleat Technology (APT) that increases the usable filtration surface area while maintaining standard industrial cartridge dimensions. The service life of a pleated cartridge is often dictated by the accessible surface area. Conventional pleated filters may offer a large gross surface area, but when the media is packed too tightly into the cartridge, only part of the surface area is usable resulting in both flow restrictions and limited contaminant holding capacity. The " blind" or unusable area commonly occurs near the inside diameter where the pleats are packed most tightly. The Betafine XL series filter cartridge is manufactured using a staggered pleat configuration that, when combined with a novel support material, provides more open space between the pleats.