9250 series heavy duty cartridge seal is specifically designed to handle demanding, high torque applications. This superior, high performance product is an ideal selection for such difficult applications as high concentration black liquor, hard-to-seal monomers such as actrylonitrile, vinyl chloride monomer, and any other potentially solidifying liquids and latex. The 9250 provides superior value when used in tough chemical slurries that require non-diluting environmental control and where vibration could occur.