Haige offers two types of Mud Pump Liners: High Chrome Mud Pump Liners ( Bi-Metal Mud Pump Liners) and Zirconia Ceramic Liners. They are designed to work for drilling operations up to 7,500 PSI. Mud Pump Liners Specifications: Size: 4” ~ 7 1/2” Type: Bi-Metal Liner, Ceramic Zirconia Liners Compatible Mud Pump Brands: EMSCO, Gardner Denver, National, Oilwell, Weatherford, Continental, Ideco, Mr Wirth, Drillmec, FMC etc