BMC77 is Single Metal Bellow Cartridge Seal has been designed to improve the ease and Accuracy of Seal Installation. The BMC73 for Universal Application. This seal is specially used for High Temperature e.s hot oil, pitch, tar and other hydrocarbons, fuels, liquid gases and other medium with low content of abrasives. This seal is avoided from the Installation faults due to preassembled unit. Individual adaption is possible according to Pump design.